MY PUBLICATIONS <p>REFEREED JOURNALS</p>

<ol>
<li> R. Rodriquez, D.K.L. Oi, M. Kataoka, C.H.W. Barnes, T. Ohshima, and A.K. Ekert <br />
Surface-acoustic-wave single-electron interferometry <br/>
Phys. Rev. B 72, 085329 (2005) 
</li>

<li>  D. Bruss, N. Datta, A. Ekert, L.C. Kwek, C. Macchiavello <br/>
Multipartite entanglement in quantum spin chains <br/>
Phys. Rev. A 72, 014301 (2005)
</li>

<li>J.F. Du, T. Durt, P. Zou, H. Li, L.C. Kwek, C.H. Lai, C.H. Oh, and A. Ekert <br />
Experimental Quantum Cloning with Prior Partial Information <br />
Phys. Rev. Lett. 94, Art. No. 040505 FEB 4 2005 <br />
quant-ph/0405094<br />
</li>

<li>  M. Christandl, N. Datta, T.C. Dorlas, A. Ekert, A. Kay, A.J. Landahl <br/>
Perfect transfer of arbitrary states in quantum spin networks <br/>
Phys. Rev. A 71, 032312 (2005).
</li>

<li>
L. M. Ioannou, B. C. Travaglione, D. Cheung, and A. K. Ekert<br />
Improved algorithm for quantum separability and entanglement detection<br />
Phys. Rev. A 70, 060303 (2004)<br />
quant-ph/0403041<br />
</li>

<li> C. Albanese, M. Christandl, N. Datta, A. Ekert <br />
Mirror inversion of quantum states in linear registers <br />
Physical Review Letters 93, 230502 (2004) <br />
quant-ph/0405029<br />
</li>


<li>M. Christandl, N. Datta, A. Ekert, A.J. Landahl <br />
Perfect state transfer in quantum spin networks<br />
Physical Review Letters 92, 187902 (2004)<br />
quant-ph/0309131<br />
</li>

<li>S. Bose, A. Ekert, Y. Omar, N. Paunkovic, V. Vedral <br />
Optimal state discrimination using particle statistics<br />
Physical Review A 68, 052309 (2003)<br />
quant-ph/0309090<br />
</li>

<li>JF Du, P. Zou, MJ Shi, LC Kwek, JW Pan, CH Oh, A. Ekert, DKL Oi, M. Ericsson <br />
Observation of geometric phases for mixed states using NMR interferometry<br />
Physical Review Letters 91, 100403 (2003) <br />
quant-ph/0305054<br />
</li>

<li>D. Bruss, M. Christandl, A. Ekert, B.G. Englert, D. Kaszlikowski, C. Macchiavello <br />
Tomographic quantum cryptography: Equivalence of quantum and classical key distillation<br />
Physical Review Letters 91, 097901 (2003)<br />
quant-ph/0303184<br />
</li>

<li>O. Guehne, P. Hyllus, D. Bruss, A. Ekert, M. Lewenstein, C. Macchiavello, A. Sanpera <br />
Experimental detection of entanglement via witness operators and local measurements<br />
Journal of Modern Optics 50 (6-7): 1079-1102 APR-MAY 2003<br />
quant-ph/0210134 <br />
</li>

<li>D. Kaszlikowski, DKL Oi, M. Christandl, K. Chang, A. Ekert, LC Kwek, CH Oh <br />
Quantum cryptography based on qutrit Bell inequalities<br />
Physical Review A, 67, 012310 (2003)<br />
quant-ph/0206170 <br />
</li>

<li>P. Hyllus, D. Bruss, A. Ekert, M. Lewenstein, C. Macchiavello, A. Sanpera<br />
Detection of entanglement with few local measurements<br />
Physical Review A, 66, 062305 (2002)<br />
quant-ph/0205089 </li>

<li>A. Ekert, C. Moura Alves, D.K.L. Oi, M. Horodecki, P. Horodecki, L.C. Kwek<br />
Direct estimations of linear and non-linear functionals of a quantum state<br />
Physical Review Letters 88, 217901 (2002)<br />
quant-ph/0203016 </li>

<li>P. Horodecki and A. Ekert <br />
Direct detection of quantum entanglement<br />
Physical Review Letters 89, 127902 (2002)<br />
quant-ph 0111064 </li>

<li>A. Ekert<br />
Quantum entanglement and secrecy<br />
International Journal of Modern Physics A, vol.16, pp. 3191-3202 (2001) </li>

<li>A. Ekert, P. Hayden, H. Inamori, D.K.L.Oi<br />
What is quantum computation?<br />
International Journal of Modern Physics A, vol.16, pp. 3335-3363 (2001) </li>

<li>A. Ekert, M. Ericsson, J.A. Jones, P. Hayden, H. Inamori, D.K.L. Oi, V. Vedral<br />
Geometric Quantum Computing <br />
Journal of Modern Optics, vol. 47, No. 14/15, pp. 2501-2513 (2000) <br />
quant-ph 0004015 </li>

<li>E. Sjoqvist, A.K. Pati, A. Ekert, J.S. Anandan, M. Ericsson, D.K.L. Oi, V. Vedral <br />
Geometric phases for mixed states in interferometry <br />
Physical Review Letters, vol. 85 pp.2845-2849 (2000). <br />
quant-ph 0005072 </li>

<li>V.Giovannetti, D.Vitali, P.Tombesi, A.Ekert <br />
Scalable quantum computation with cavity QED systems <br />
Physical Review A 6203 pp. 2306- (2000) <br />
quant-ph 0004107 </li>

<li>D.Deutsch, A. Ekert, R. Lupacchini <br />
Machines,Logic and Quantum Physics <br />
The Bulletin of Symbolic Logic, vol. 6, pp. 265 - 283 (2000).<br />
math.HO 9911150 or The Bulletin of Symbolic Logic Page </li>

<li>J.A. Jones, V. Vedral, A. Ekert and G. Castagnoli<br />
Geometric quantum computation with NMR <br />
Nature vol. 403 pp. 869-871 (2000) <br />
quant-ph 9910052 </li>

<li>M. Mosca, R.Jozsa , A.Steane, A.Ekert<br />
Quantum-enhanced information processing <br />
Phil. Trans. R. Soc. London A 358 pp. 261 - 279 (2000). </li>

<li>J.I. Cirac, A. K. Ekert, and C. Macchiavello <br />
Optimal purification of a single qubit <br />
Phys. Rev. Lett. vol. 82, pp. 4344 - 4347 (1999). <br />
quant-ph 9812075 </li>

<li>J.I. Cirac, A. K. Ekert, S. F. Huelga, and C. Macchiavello <br />
Distributed quantum computation over noisy channels <br />
Phys.Rev. A 59 pp. 4249 - 4254 (1999) <br />
quant-ph 9803017 </li>

<li>R. Derka, V.Buzek, and A.Ekert <br />
Universal algorithm for optimal estimation of quantum states from finite ensembles <br />
Phys. Rev. Lett. vol.80 pp. 1571 - 1575 (1998). <br />
quant-ph 9707028 </li>

<li>A.Ekert, R. Jozsa <br />
Quantum algorithms: entanglement-enhanced information processing <br />
Phil. Trans. R. Soc. London A 356 pp. 1715 - 1715 (1998). <br />
quant-ph 9803072 </li>

<li>D. Bruss, A. Ekert, C. Macchiavello <br />
Optimal universal quantum cloning and state estimation <br />
Physical Review Letters, Vol.81 pp.2598 - 2601 (1998). <br />
quant-ph 9712019 </li>

<li>R. Cleve, A. Ekert, L. Henderson, C. Macchiavello, M. Mosca <br />
On quantum algorithms <br />
Complexity vol.4 pp.33 - 42 (1998). <br />
quant-ph 9903061 </li>

<li>A.Ekert <br />
Basic Concepts in Quantum Computation <br />
The Transactions of the Institute of Electronics, Information and Communication Engineers of Japan vol. J 81-A pp.1633 - 1637 (1998). </li>

<li>D.Bruss, D.P. DiVincenzo, A.Ekert, C.Macchiavello, J.A.Smolin <br />
Optimal Universal and State-Dependent Quantum Cloning<br />
Physical Review A 57, pp. 2367 - 2378 (1998) <br />
quant-ph 9705038 </li>

<li>G.Castagnoli,A.Ekert and C.Macchiavello <br />
Quantum computation: from the sequential approach to simulated annealing <br />
International Journal of Theoretical Physics, vol.37 pp.463 - 469 (1998). </li>

<li>R.Cleve, A.Ekert, C.Macchiavello, and M. Mosca <br />
Quantum Algorithms Revisited <br />
Proceedings of the Royal Society A 454, pp. 339 - 354 (1998) <br />
quant-ph 9708016 </li>

<li>A.Ekert<br />
Quantum interferometers as quantum computers <br />
Physica Scripta vol.T76 pp.218-222 (1998). </li>

<li>A.Ekert and C.Macchiavello <br />
Against quantum noise<br />
Acta Physica Polonica A 93, pp. 63-76 (1998) <br />
quant-ph 9904070 </li>

<li>D.Bruss, A.Ekert, S.F. Huelga, J.-W.Pan and A. Zeilinger <br />
Quantum computing with Controlled-NOT and few qubits <br />
Phil. Trans. R. Soc. London A 355, pp. 2259 - 2266 (1997). </li>

<li>A.Miranowicz, J.Bajer, A.Ekert, and W.Leonski <br />
Photon antibunching versus phantom antibunching <br />
Acta Physica Slovaca, vol.47 pp. 319 - 322 (1997). </li>

<li>S.F Huelga, C.Macchiavello, T.Pellizzari, A. K.Ekert, M.B.Plenio, and J.I. Cirac <br />
On the Improvement of Frequency Standards with Quantum Entanglement<br />
Physical Review Letters vol. 79 pp. 3865 - 3868 (1997)<br />
quant-ph 9707014 </li>

<li>A.Ekert and C.Macchiavello<br />
Restoring quantum states after measurements<br />
Applied Physics B, vol. 64 pp.125 - 127, (1997). </li>

<li>A.Barenco, A.Berthiaume, D.Deutsch, A.Ekert, R.Jozsa, and C.Macchiavello<br />
Stabilising quantum computation via symmetrisation<br />
SIAM Journal of Computing, vol. 26 pp. 1541-1557 (1997) <br />
quant-ph 9604028 </li>

<li>A.Ekert and R.Jozsa <br />
Shor's Quantum Algorithm for Factorising Numbers <br />
Review of Modern Physics, vol. 68 pp.733-753 (July 1996)<br />
[REVIEW] </li>

<li>D.Deutsch, A. Ekert, R.Jozsa, C.Macchiavello, S.Popescu and A.Sanpera <br />
Quantum privacy amplification and the security of quantum cryptography over noisy channels <br />
Physical Review Letters, vol. 77 pp. 2818 - 2821 (1996)<br />
quant-ph 9604039 </li>

<li>G.M.Palma, K.-A.Suominen, and A.Ekert<br />
Quantum computers and dissipation<br />
Proceeding of the Royal Society A 452 pp. 567-584 (1996) <br />
quant-ph 9702001 </li>

<li>A.K.Ekert and C.Macchiavello <br />
Quantum error-correction for communication<br />
Physical Review Letters, vol. 77, pp. 2585 - 2588 (1996) <br />
quant-ph 9602022 </li>

<li>V.Vedral, A. Barenco, and A.Ekert <br />
Quantum networks for elementary arithmetic operations<br />
Physical Review A 54 pp. 147-153 (1996) <br />
quant-ph 9511018 </li>

<li>A.Barenco, A.Ekert, K.-A.Suominen, and P. Torma <br />
Approximate Quantum Fourier Transform and decoherence<br />
Physical Review A 54, pp. 139 - 146 (1996) <br />
quant-ph 9601018 </li>

<li>D.Deutsch, A.Barenco, and A.Ekert <br />
Universality in quantum computation<br />
Proceeding of the Royal Society A 449, pp. 669-677 (1995)<br />
quant-ph 9505018 </li>

<li>A.Barenco and A.Ekert<br />
Quantum computation<br />
Acta Physica Slovaca, vol. 45, pp. 205 - 216 (1995). </li>

<li>A.Barenco, D.Deutsch, A.Ekert, and R.Jozsa <br />
Conditional Quantum Dynamics and Logic Gates <br />
Physical Review Letters, vol. 74 pp.4083 - 4086 (1995)<br />
quant-ph 9503017 </li>

<li>. A.Barenco and A.Ekert <br />
Dense coding based on quantum entanglement<br />
Journal of Modern Optics, vol. 42 pp. 1253 - 1259 (1995). </li>

<li>A.Ekert and P.L.Knight<br />
Entangled quantum systems and the Schmidt decomposition<br />
American Journal of Physics, vol. 63 pp.415 - 423 (1995). </li>

<li>A.K.Ekert, B.Huttner, G.M.Palma, and A.Peres <br />
Eavesdropping on Quantum Cryptosystems <br />
Physical Review A 50, pp.1047 - 1056 (1994). </li>

<li>A.K.Ekert and G.M.Palma <br />
Quantum Cryptography with Interferometric Quantum Entanglement<br />
Journal of Modern Optics, vol. 41 pp. 2413 - 2423 (1994)<br />
Special Issue on Quantum Communication. </li>

<li>A.K.Ekert and B.Huttner<br />
Eavesdropping Techniques in Quantum Cryptosystems<br />
Journal of Modern Optics, vol. 41, pp.2455-2466 (1994)<br />
Special Issue on Quantum Communication </li>

<li>M.Zukowski, A.Zeilinger, M.Horne, and A.K.Ekert<br />
``Event-ready detectors"; Bell experiment via entanglement swapping<br />
Physical Review Letters, vol.71, pp.4287 -4290 (1993). </li>

<li>A.K.Ekert, J.G.Rarity, P.R.Tapster, and G.M.Palma <br />
Practical Quantum Cryptography based on Two-Photon Interferometry<br />
Physical Review Letters vol.69, pp.1293-1295 (1992). </li>

<li>A.K.Ekert and S.J.D.Phoenix<br />
The evolution of correlations in a dissipative system<br />
Journal of Modern Optics vol.38, pp.19- (1991). </li>

<li>A.K.Ekert and P.L.Knight <br />
Relationship between semiclassical and quantum mechanical input-output theories of optical response<br />
Physical Review A, vol.43, pp.3934 - 3938 (1991). </li>

<li>A.K.Ekert <br />
Quantum cryptography based on Bell's theorem<br />
Physical Review Letters, vol.67 pp.661 - 663, (1991). </li>

<li>G.M.Palma, A.Vaglica, C.Leonardi and A.K.Ekert<br />
Squeezed triggering of superradiant beats<br />
Optics Communications vol.86, pp.192-198 (1991). </li>

<li>A.K.Ekert and P.L.Knight <br />
Canonical transformations and decay into phase-sensitive reservoirs <br />
Physical Review A vol.42, pp. 487 - 493 (1990). </li>

<li>A.K.Ekert and P.L.Knight<br />
Correlations and squeezing of two-mode oscillations<br />
American Journal of Physics vol.57, pp.692 - 697 (1989). </li>

<li>A.K.Ekert and P.L.Knight<br />
Non-stationary squeezing in a parametric amplifier<br />
Optics Communications vol.71, pp.107 - 112 (1989). </li>

<li>A.K.Ekert, G.M.Palma, P.L.Knight and S.M.Barnett<br />
The establishment of correlated pure states through decay in a squeezed reservoir<br />
Physical Review A vol.39, pp.6026 - 6028 (1989). </li>

<li>A.K.Ekert and K.Rzazewski<br />
Second harmonic generation and statistical properties of light<br />
Optics Communications vol.65, pp.225 - 228 (1988). </li>

<li>A.K.Ekert and K.Rzazewski <br />
Chirped pulses and squeezing in parametric down-conversion<br />
Physical Review A vol.37, pp.1366-1367 (1988). </li>

<li>A.K.Ekert and W.Gawlik<br />
Decoupling of the hyperfine structure with strong non-monochromatic laser light<br />
Physics Letters vol.121, pp.175 - 177 (1987). </li>

<p>BOOKS</p>

<li>Dirk Bouwmeester, Artur Ekert, Anton Zeilinger (editors)<br />
The Physics of Quantum Information", (Springer, 2000). </li>

<p>BOOK CHAPTERS</p>

<li>A. Ekert<br />
Quantum Computation<br />
Highlights of Mathematical Physics <br />
Edited by A.Fokas, J.Haliwell, T.Kible, and B.Zegarlinski<br />
(American Mathematical Society, 2002) </li>

<li>A. Ekert<br />
From quantum code-making to quantum code-breaking<br />
Geometric Issues in the Foundations of Science <br />
Conference in Honour of Roger Penrose <br />
(Oxford University Press, 1997)<br />
quant-ph 9703035 </li>

<li>A.Ekert and C.Macchiavello<br />
An Overview of Quantum Computing<br />
Unconventional Models of Computation<br />
Edited by C.S.Calude, J.Casti and M.J.Dinneen<br />
pp. 19-44, Springer Series in Discrete Mathematics and Theoretical Computer Science<br />
Springer, Singapore, 1998. </li>

<li>A.Barenco and A.Ekert<br />
Quantum computation<br />
Nova Acta Leopoldina <br />
Signalwandlung und Informationverabeitung<br />
Band 72 Nummer 294, pp. 319-331 (1996). </li>

<p>BOOK REVIEWS</p>

<li>Simon Singh The Code Book<br />
Physics World, February 2000 </li>

<p>CONFERENCE PROCEEDINGS</p>



<li>D. Kaszlikowski, T. Durt, D.K.L. Oi, M. Christandl, A. Ekert, L.C. Kwek and C.H. Oh<br />
Quantum Cryptography Involving Qutrits<br />
In Proceedings of Adv. Tech. Congress, 20-21 May 2003, Putrajaya, Malaysia, pp 20-31<br />
</li>

<li>A.Ekert and R.Lupacchini<br />
What does quantum physics tell us about computation?<br />
Proceedings of the Workshop "Symbol, Physical Processes, Biological Processes: Recent Explorations of the Notion of Algorithm"<br />
Cesena, Research Papers in Philosophy of Science Edited by R. Lupacchini and G.Tamburrini<br />
Universita di Bologna, Bulzoni Editore </li>

<li>D.DiVincenzo and A.K. Ekert <br />
Decoherence and recoherence in quantum computation<br />
Quantum Coherence and Decoherence pp. 7-12<br />
Elsevier (North Holland Delta Series) 1999 <br />
(Ed. Y.A.Ono and F.Fujikawa). </li>

<li>M.Mosca and A.Ekert <br />
The Hidden subgroup problem and eigenvalue estimation on a quantum computer <br />
Quantum Computing and quantum communication First NASA International Conference QCQC'98 Palm Springs, California, USA, February 1998 <br />
Lecture Notes in Computer Science Vol.1509, pp 174-188, Springer 1999 <br />
Edited by C.P.Williams <br />
quant-ph 9903071 </li>

<li>A.Barenco, A.Ekert, G.M. Palma and K.-A.Suominen<br />
Quantum computation <br />
Coherence and Quantum Optics VII <br />
Proceedings of CQO-7 (Rochester, June 7-10, 1995)<br />
Edited by J.H.Eberly, L.Mandel, and E.Wolf<br />
pp. 113-122, Plenum Press, 1996. </li>

<li>A.K.Ekert and C.Macchiavello<br />
Data security and quantum mechanics<br />
Proceedings of the XXXIst Recontres de Moriond <br />
Dark matter in cosmology, quantum measurements, experimental gravitation<br />
Edited by R. Ansari, Y.Giraud-Heraud, and J. Tran Thanh Van <br />
pp.329-332, Editions Frontiers 1996. </li>

<li>A.K.Ekert<br />
Quantum Cryptography and Computation<br />
Advances in Quantum Phenomena <br />
ed. E.G.Beltrametti and J-M.Levy-Leblond<br />
pp. 243-262, Plenum Press, New York, 1995 <br />
NATO ASI Series B: Physics Vol. 347 </li>

<li>A.Ekert<br />
Quantum computation <br />
Atomic Physics 14, AIP Conference Proceedings 323 <br />
XIV International Conference on Atomic Physics, Boulder, CO, USA <br />
pp.450-466, AIP Press, New York 1995. </li>

<li>A.K.Ekert and G.M.Palma <br />
Quantum cryptography with quantum interferometry<br />
Proceedings of the Adriatico Workshop on Quantum Interferometry<br />
Eds F.De Martini, G.Denardo and A.Zeilinger <br />
pp.274-286, World Scientific, 1994 </li>

<li>A.K.Ekert<br />
Quantum cryptography and Bell's theorem<br />
Quantum Measurement in Optics, pp.413-418 <br />
ed. P.Tombesi and D.Walls, Plenum Press, New York, 1992 <br />
NATO ASI Series B: vol.282. </li>

<li>F.A.M.DeOliveira, P.L.Knight, G.M.Palma and A.K.Ekert <br />
The statistical properties of squeezed light and its phase-dependent interaction with atoms <br />
Noise and Chaos in Nonlinear Dynamical Systems <br />
ed. F.Moss, L.Lugiato and W.Schleich <br />
pp.34-74, Cambridge University Press, 1990. </li>

<li>A.K.Ekert and P.L.Knight <br />
The Wigner function of two-mode squeezed states -- free and dissipative evolution <br />
Coherence and Quantum Optics VI <br />
ed. L. Mandel, E.Wolf, and J.H.Eberly <br />
Plenum Press, New York, 1990. </li><p>POPULAR AND SEMI-POPULAR</p>

<li>A.Ekert, R. Lupacchini <br />
Calcolatori quantistici <br />
Il Nuovo Saggiatore, vol. 16, no. 3-4, pp. 58-64 (2000) <br />
Bollettino della Societa Italiana di Fisica. </li>

<li>D.Deutsch and A.Ekert <br />
Quantum computation <br />
Physics World , vol. 11 No.3, pp.47-52 (March 1998) <br />
Special Issue on Quantum Information. </li>

<li>A.Barenco, A.Ekert, C.Macchiavello, and A. Sanpera <br />
Un Saut Quantique Pour Les Calculateurs <br />
La Recherche, No. 292, pp. 52-58 (November 1996) <br />
[COVER STORY] </li>

<li>A.K.Ekert <br />
Quantum Computing - Shannon Theorem Revisited <br />
Nature (News and Views) vol.367, pp.513-514 (1994). </li>

<li>A.K.Ekert<br />
Quantum keys for keeping secrets<br />
New Scientist vol.137, pp.24-28 (16 January 1993)<br />
[COVER STORY] </li>

<li>D.Deutsch and A.K.Ekert <br />
Quantum communication moves into the unknown<br />
Physics World vol.6, pp.22-23 (June 1993). </li>

<li>C.H.Bennett, G.Brassard and A.K.Ekert <br />
Quantum Cryptography <br />
Scientific American vol.267, pp.50-57 (October 1992).<br />
[COVER STORY] </li>

<li>A.K.Ekert <br />
Powrot do przeszlosci (Polish) <br />
[Back to the past - on the closed time-like lines] <br />
Wiedza i Zycie No. 1, pp.8- (January 1992). </li>

<li>A.K.Ekert <br />
Adventures in quantum cryptoland (Japanese) <br />
Parity vol.7, pp.26-31 (February 1992). </li>

<li>A.K.Ekert and J.Jedrzejewski <br />
Dziel i Rzadz (Polish) <br />
[On the mathematics of social choice and voting systems] <br />
Wiedza i Zycie No. 9, pp.8-12 (September 1992). </li>

<li>A.K.Ekert <br />
Beating the code-breakers <br />
Nature (News and Views) vol.358, pp.14-15 (2 July 1992). </li>

<li>A.K.Ekert <br />
La mecanique quantique au secours des agents secrets (French) <br />
La Recherche, vol.22, pp.790- (June 1991) <br />
La mecanica cuantica en auxilio de los agentes secretos (Spanish) <br />
Mundo Cientifico vol.11, pp.886- (September 1991). </li>

<li>A.K.Ekert <br />
Przygoda w kwantowej krainie szyfrow (Polish) <br />
[Elementary introduction to quantum cryptography] <br />
Wiedza i Zycie No. 7, pp.45- (July 1991). </li>

<li>A.K.Ekert and S.Law <br />
QED's nonlinear light<br />
Physics World vol.3, pp.32-33 (1990). </li>

<li>A.K.Ekert <br />
Photons below the Poisson barrier <br />
Physics World vol.2, pp.21-22 (1989). </li>

<li>A.K.Ekert <br />
Jak wygladaja szybko poruszajace sie ciala (Polish) <br />
[On the photographic appearance of rapidly moving objects] <br />
Delta, No.11, pp.10-12 (1984). </li>

</ol>