Natalia Korolkova

Natalia Korolkova

Postal address:
School of Physics & Astronomy
Physical Science Building
North Haugh
St Andrews
United Kingdom

E-mail: nvk@st-andrews.ac.uk

Direct phone: +44 (0)1334 463139

Research overview

Natalia Korolkova is Lecturer in Theoretical Physics with main interests in theoretical quantum optics and quantum information.

 

The most recent and very promising development is continuous variable (CV) quantum information.  Encoding CV information onto mesoscopic carriers such as the quadratures of light modes or the collective spin of atoms offers several distinct advantages, such as the deterministic generation and manipulation of entangled states of light and atomic ensembles, or the interface between light and atoms allowing the implementation of a quantum memory. This toolbox of available operations has recently been significantly extended which opened access to the realm of non-Gaussian operations, that are essential to several critical applications such as CV entanglement distillation or CV quantum computing.

 

Natalia actively participates in research on different acpects of CV quantum information science. This includes the engineering of non-Gaussian operations on photonic and atomic states exploiting the measurement-induced or actual nonlinearities between light and atoms, CV quantum computing with cat states or cluster states, CV entanglement distillation, multipartite CV entanglement and light-matter interactions. Recently, Natalia got involved in studying the nature and possible application of more general quantum correlations in mixed states, which are beyond entanglement. These correlations are quantified by quantum discord and may change our understanding of what the ultimate quantum resources are. Natalia has strong collaborative links to several European experimental and theory groups and had participated in a number of EU-funded collaborative projects.

 

Within the current EU-funded project, Natalia takes part in development and demonstration of the novel routes towards scaling up physical devices for quantum information science. Communication between different parts of a quantum processor by means of a quantum bus receives particular attention. Developing a scalable technology is pursued by advancing and integrating two successful approaches, solid-state and atom-optical. The new, integrated scheme will be based on the simultaneous exploitation of superconducting qubits for fast and scalable computational tasks and of trapped ions for storage and processing of information with long coherence times. The  long-term vision is an integrated scalable device for quantum information processing.

Recent Publications

Free-space quantum signatures using heterodyne measurements
Croal, C., Peuntinger, C., Heim, B., Khan, I., Marquardt, C., Leuchs, G., Wallden, P., Andersson, E. & Korolkova, N. 2 Sep 2016 In : Physical Review Letters. 117, 10, 5 p., 100503
Research output: Contribution to journalArticle

Entangling the whole by beam splitting a part
Croal, C., Peuntinger, C., Chille, V., Marquardt, C., Leuchs, G., Korolkova, N. & Mišta Jr., L. 4 Nov 2015 In : Physical Review Letters. 115, 19, 5 p., 190501
Research output: Contribution to journalArticle

Quantum Discord and Entanglement Distribution as the Flow of Correlations Through a Dissipative Quantum System
Quinn, N., Croal, C. & Korolkova, N. Nov 2015 In : Journal of Russian Laser Research. 36, 6, p. 550-561 12 p.
Research output: Contribution to journalArticle

Enhancing student learning of two-level quantum systems with interactive simulations
Kohnle, A., Baily, C., Campbell, A., Korolkova, N. & Paetkau, M. Jun 2015 In : American Journal of Physics. 83, 6, p. 560-566
Research output: Contribution to journalArticle

Quantum nature of Gaussian discord: experimental evidence and role of system-environment correlations
Chille, V., Quinn, N., Peuntinger, C., Croal, C., Mišta, L., Marquardt, C., Leuchs, G. & Korolkova, N. 13 May 2015 In : Physical Review. A, Atomic, molecular, and optical physics. 91, 5, 050301(R)
Research output: Contribution to journalArticle

Quantum tight-binding chains with dissipative coupling
Mogilevtsev, D., Slepyan, G. Y., Garusov, E., Kilin, S. Y. & Korolkova, N. 30 Apr 2015 In : New Journal of Physics. 17, 13 p., 043065
Research output: Contribution to journalArticle

Tomography by Noise
Harder, G., Mogilevtsev, D., Korolkova, N. & Silberhorn, C. 13 Aug 2014 In : Physical Review Letters. 113, 7, 5 p., 070403
Research output: Contribution to journalArticle

Quantum discord from system-environment correlations
Tatham, R. & Korolkova, N. Apr 2014 In : Physica Scripta. T160, 3 p., 014040
Research output: Contribution to journalArticle

Entanglement concentration with quantum nondemolition Hamiltonians
Tatham, R. & Korolkova, N. 9 Jan 2014 In : Physical Review. A, Atomic, molecular, and optical physics. 89, 1, 9 p., 012308
Research output: Contribution to journalArticle

Distributing entanglement with separable states
Peuntinger, C., Chille, V., Mišta, Jr., L., Korolkova, N., Förtsch, M., Korger, J., Marquardt, C. & Leuchs, G. 4 Dec 2013 In : Physical Review Letters. 111, 23, 5 p., 230506
Research output: Contribution to journalArticle

Nonlinear dissipation can combat linear loss
Mogilevtsev, D., Mikhalychev, A., Shchesnovich, V. S. & Korolkova, N. 28 Jun 2013 In : Physical Review. A, Atomic, molecular, and optical physics. 87, 6, 6 p., 063847
Research output: Contribution to journalArticle

Reconciliation witness and reliability of a quantum atmospheric channel
Vasylyev, D., Rozpedek, F. & Korolkova, N. 28 Mar 2013 In : Physica Scripta. Topical Issues. T153, 5 p., 014061
Research output: Contribution to journalArticle

Creation of arbitrary Dicke and NOON states of trapped-ion qubits by global addressing with composite pulses
Ivanov, S. S., Vitanov, N. V. & Korolkova, N. 25 Feb 2013 In : New Journal of Physics. 15, 11 p., 023039
Research output: Contribution to journalArticle

Gaussian multipartite bound information
Mista, L. & Korolkova, N. 25 Oct 2012 In : Physical Review. A, Atomic, molecular, and optical physics. 86, 4, 4 p., 040305
Research output: Contribution to journalArticle

Universal quantum computation with continuous-variable Abelian anyons
Milne, D. F., Korolkova, N. V. & van Loock, P. 29 May 2012 In : Physical Review. A, Atomic, molecular, and optical physics. 85, 5, p. - 7 p., 052325
Research output: Contribution to journalArticle

Composite-cluster states and alternative architectures for one-way quantum computation
Milne, D. F. & Korolkova, N. V. 12 Mar 2012 In : Physical Review. A, Atomic, molecular, and optical physics. 85, 3, p. - 9 p., 032310
Research output: Contribution to journalArticle

Nonclassical correlations in continuous-variable non-Gaussian Werner states
Tatham, R., Mista, L., Adesso, G. & Korolkova, N. 21 Feb 2012 In : Physical Review. A, Atomic, molecular, and optical physics. 85, 2, p. - 12 p., 022326
Research output: Contribution to journalArticle

A new multimedia resource for teaching quantum mechanics concepts
Kohnle, A., Cassettari, D., Edwards, T. J., Ferguson, C., Gillies, A. D., Hooley, C., Korolkova, N., Llama, J. & Sinclair, B. D. 2012 In : American Journal of Physics. 80, 2, p. 148-153
Research output: Contribution to journalArticle

Entanglement concentration for two atomic ensembles using an effective atom-light beamsplitter
Tatham, R. & Korolkova, N. 24 Aug 2011 In : Journal of Physics B: Atomic, Molecular and Optical Physics. 44, 17, 7 p., 175506
Research output: Contribution to journalArticle

Measurement-induced disturbances and nonclassical correlations of Gaussian states
Mista, L., Tatham, R., Girolami, D., Korolkova, N. & Adesso, G. 21 Apr 2011 In : Physical Review. A, Atomic, molecular, and optical physics. 83, 4, p. - 15 p., 042325
Research output: Contribution to journalArticle

An approximate effective beamsplitter interaction between light and atomic ensembles
Tatham, R., Menzies, D. & Korolkova, N. 21 Feb 2011 In : Physica Scripta. Topical Issues. T143, 4 p., 014023
Research output: Contribution to journalArticle

The 17th Central European Workshop on Quantum Optics in St Andrews, Scotland
Leonhardt, U. & Korolkova, N. 21 Feb 2011 In : Physica Scripta. Topical Issues. T143, 1 p., 014001
Research output: Contribution to journalEditorial

Improving continuous-variable entanglement distribution by separable states
Mista, L. & Korolkova, N. Sep 2009 In : Physical Review. A, Atomic, molecular, and optical physics. 80, 3, p. - 7 p., 032310
Research output: Contribution to journalArticle

Influence of modal loss on quantum state generation via cross-Kerr nonlinearity
Mogilevtsev, D., Tyc, T. & Korolkova, N. May 2009 In : Physical Review. A, Atomic, molecular, and optical physics. 79, 5, p. - 12 p., 053832
Research output: Contribution to journalArticle

Weak values and entanglement concentration
Menzies, D. & Korolkova, N. 2009 QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTING (QCMC). Lvovksy, A. (ed.). MELVILLE: AMER INST PHYSICS, p. 9-12 4 p.
Research output: Chapter in Book/Report/Conference proceedingConference contribution

Weak measurements with entangled probes
Menzies, D. & Korolkova, N. Jun 2008 In : Physical Review. A, Atomic, molecular, and optical physics. 77, 4 p.
Research output: Contribution to journalArticle

Distribution of continuous-variable entanglement by separable Gaussian states
Mista, L. & Korolkova, N. May 2008 In : Physical Review. A, Atomic, molecular, and optical physics. 77, 4 p.
Research output: Contribution to journalArticle

Effective cross-Kerr Hamiltonian for a nonresonant four-level atom
Sinclair, G. F. & Korolkova, N. Mar 2008 In : Physical Review. A, Atomic, molecular, and optical physics. 77, 7 p.
Research output: Contribution to journalArticle

Highly non-Gaussian states created via cross-Kerr nonlinearity
Tyc, T. & Korolkova, N. 26 Feb 2008 In : New Journal of Physics. 10, 13 p., 023041
Research output: Contribution to journalArticle

Weak values and continuous-variable entanglement concentration
Menzies, D. & Korolkova, N. Dec 2007 In : Physical Review. A, Atomic, molecular, and optical physics. 76, 5 p.
Research output: Contribution to journalArticle

Cross-Kerr interaction in a four-level atomic system
Sinclair, G. F. & Korolkova, N. Sep 2007 In : Physical Review. A, Atomic, molecular, and optical physics. 76, p. 033803 5 p.
Research output: Contribution to journalArticle

Polarization squeezing and entanglement
Korolkova, N. 2007 Quantum Information with Continous Variables of Atoms and Light. Cerf, N. J., Leuchs, G. & Polzik, E. S. (eds.). COVENT GARDEN: Imperial College Press, p. 181-196 16 p.
Research output: Chapter in Book/Report/Conference proceedingConference contribution

Quantum teleportation
Dávila Romero, L. C. & Korolkova, N. 2007 in Lecture Notes in Quantum Information. Leuchs, G. & Bruss, D. (eds.). Wiley-VCH, Weinheim, p. 255-270
Research output: Chapter in Book/Report/Conference proceedingChapter

Polarization squeezing and nonclassical properties of light
Luis, A. & Korolkova, N. Oct 2006 In : Physical Review. A, Atomic, molecular, and optical physics. 74, 4, p. 043817 7 p.
Research output: Contribution to journalArticle

Procrustean entanglement concentration of continuous-variable states of light
Menzies, D. & Korolkova, N. Oct 2006 In : Physical Review. A, Atomic, molecular, and optical physics. 74, 4, p. 042315 6 p.
Research output: Contribution to journalArticle