Dr. Sergei Slussarenko Profile

Dr. Sergei Slussarenko

Senior Lecturer at Griffith Univ

SPIE Involvement:

Author

Dr Slussarenko is a Senior Lecturer and an ARC Future Fellow (2025-2029) at the Queensland Quantum and Advanced Technology Instite at Griffith University and a Program Manager at ARC Centre of Excellence for Quantum Computation and Communication Technology (CQC²T). He completed his PhD in 2011 at the University of Naples Federico II (Italy) and continued his research in Naples for three more years. He moved to Australia in 2013 where he joined Griffith University and CQC²T.

Sergei’s research is based around the development of novel tools for efficient generation and control of exotic quantum states of light, and the use of these tools in addressing challenging tasks in quantum information science. Sergei's research interests include long-distance communication, entanglement verification protocols, quantum networks, quantum metrology, and other entanglement-based applications of quantum optics.

Proceedings Article | 4 October 2024 Presentation

Experimental activation of quantum nonlocality via a quantum network

Luis Villegas-Aguilar, Emanuele Polino, Sergei Slussarenko, Nora Tischler, Farzad Ghafari, Eric Cavalcanti, Geoff Pryde, Marco Túlio Quintino, Kiarn Laverick, Lynden Shalm

Proceedings Volume PC13148, PC131480D (2024) https://doi.org/10.1117/12.3028888

KEYWORDS: Quantum networks, Quantum experiments, Quantum correlations, Quantum physics, Quantum entanglement, Entangled states, Quantum measurement, Standards development, Quantum states, Quantum channels

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Proceedings Article | 13 July 2021 Presentation

Correcting lossy channels with heralded amplification

Sergei Slussarenko

Proceedings Volume 11844, 118440B (2021) https://doi.org/10.1117/12.2603521

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Proceedings Article | 5 March 2019 Presentation

Optical phase measurement with entangled photonic states (Conference Presentation)

Sergei Slussarenko

Proceedings Volume 10934, 109341Q (2019) https://doi.org/10.1117/12.2514789

KEYWORDS: Phase measurement

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Proceedings Article | 11 October 2018 Presentation

Unconditional shot-noise limit violation in photonic quantum metrology (Conference Presentation)

Geoff Pryde, Sergei Slussarenko

Proceedings Volume 10803, 108030H (2018) https://doi.org/10.1117/12.2325473

KEYWORDS: Photons, Metrology, Phase measurement, Interferometry, Interferometers, Quantum optics, Precision measurement, Precision optics, Optical sensing, Sensors

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Quantum metrology exploits quantum correlations to perform measurements with precision higher than can be achieved with classical approaches [1]. Photonic approaches promise transformative advances in the family of interferometric phase measurement techniques, a vital toolset used to precisely determine quantities including distance, velocity, acceleration and materials properties. Without quantum enhancement, the precision limit in optical phase sensing (i.e. the minimum uncertainty) is the shot noise limit (SNL): 1/sqrt(N) where N is the number of resources (e.g. photons) used. Entangled photons promise sensitivity surpassing the shot noise limit achievable with classical probes. The maximally phase-sensitive state is the NOON state [2], a path-entangled state of definite photon number N. Despite theoretical proposals stretching back decades [3], no measurement using such photonic (i.e. definite photon number) states has unconditionally surpassed the shot noise limit: by contrast, all such demonstrations employed postselection to discount photon loss in the source, interferometer or detectors. Here, we use the state of art single photon generation and detection technology to respectively make and measure a two-photon NOON state, and use it to perform unconditional phase sensing beyond the shot noise limit — that is, without artificially correcting for loss or any other source of imperfection [4]. We performed a two-photon NOON state polarisation interferometry measurement on a birefringent test phase. We use photons generated from a high-heralding-efficiency, high purity source of telecom-wavelength photon pairs [5], and we employ high efficiency superconducting photon detectors. Unlike previous experiments, our apparatus does not require postselection to achieve phase uncertainty below that achievable in an ideal, lossless classical interferometer. Our results show a clear violation (for a range of phases) of the stringent SNL Fisher-information bound, F_{SNL} = 2.09635, that takes into account the information in unrecorded trials arising from loss and higher order terms — making our demonstration unconditional. We also performed a direct phase sensing measurement and observed phase uncertainties more than 10 standard deviations below the SNL [4]. Our results enable quantum-enhanced phase measurements at low photon flux and open the door to the next generation of optical quantum metrology advances. References [1] V. Giovannetti, S. Lloyd, and L. Maccone, “Advances in quantum metrology,” Nat. Photon. 5, 222–229 (2011). [2] J. P. Dowling, “Quantum optical metrology–the lowdown on high-N00N states,” Contemp. Phys. 49, 125–143 (2008). [3] R. Demkowicz-Dobrzanski, M. Jarzyna, and J. Kołodynski, “Quantum limits in optical interferometry,” Prog. Opt. 60, 345–435 (2015). [4] S. Slussarenko, M. M.Weston, H. M. Chrzanowski, L. K. Shalm, V. B. Verma, S.W. Nam, and G. J. Pryde, “Unconditional violation of the shot noise limit in photonic quantum metrology,” Nat. Photon. 11, 700-703 (2017). [5] M. M. Weston, H. M. Chrzanowski, S. Wollmann, A. Boston, J. Ho, L. K. Shalm, V. B. Verma, M. S. Allman, S. W. Nam, R. B. Patel, S. Slussarenko, and G. J. Pryde, “Efficient and pure femtosecond-pulse length source of polarization-entangled photons,” Opt. Express 24, 10,869–10,879 (2016).

Proceedings Article | 11 October 2018 Presentation

Discriminating nonorthogonal quantum states with minimum average number of copies (Conference Presentation)

Sergei Slussarenko, Morgan Weston, Jun-Gang Li, Nicholas Campbell, Howard Wiseman, Geoff Pryde

Proceedings Volume 10803, 108030P (2018) https://doi.org/10.1117/12.2325485

KEYWORDS: Quantum information, Quantum computing, Quantum mechanics, Quantum physics, Detection theory, Estimation theory

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Quantum measurement and control science provides a toolkit for implementing quantum information protocols, overcoming noisy operation and minimizing the use of costly quantum resources. The importance of finding optimal measurement and control strategies is revealed in the task of quantum state discrimination, a characteristic feature of quantum mechanics and a primitive for quantum information science and technology. When a quantum system is prepared in one of two known nonorthogonal quantum states, no measurement can deterministically tell which state the system is in. Two strategies can be applied to discriminate non-orthogonal states efficiently. Unambiguous state discrimination (USD) is strategy that provides a guess which is either correct, or inconclusive [1]. Alternatively, minimum error discrimination (MED) strategy will always provide a conclusive answer, which can sometimes be incorrect [2]. Perfect nonorthogonal state discrimination is still impossible even when multiple copies of the system are available, although different strategies increase the chance of having conclusive (for USD), or correct (for MED) result. Multiple-copy measurement strategies can be either collective, when a single measurement involves all the copies of the system, or local, when each copy of the system is measured separately. The latter can be further divided into fixed, where the measurement applied to each copy is the same, or adaptive, where the measurement on each subsequent copy depends on the outcomes of the previous measurements [3,4]. A multiple-copy MED strategy is defined by its goal of minimizing the average error for fixed resources, i.e. the number of copies of the system. An alternative approach we consider, is to minimize the average resources required, while keeping errors below a given bound [5]. This approach is central for fault-tolerant quantum computing and has been applied to a number of quantum control strategies [6,7]. We call the corresponding state discrimination task the guaranteed bounded error discrimination (GBED) task. Intuitively, one may assume that the multiple-copy strategies optimal for MED would be also optimal for GBED. We experimentally apply two known local non-adaptive strategies, previously considered for the MED task, to the two-state GBED problem [5]. We then derive and experimentally demonstrate a new local strategy, designed specifically for the GBED task that outperforms other strategies. Moreover, it performs usually better than, and in the regime of small error, scales better than, the theoretical performance of the optimal adaptive strategy for the MED task. The discovered reversal in the performance of schemes when swapping the task definition from performance-maximization to resource-minimization, is similar to that previously observed in state purification [6], suggesting that this phenomenon is a generic one. [1] I. D. Ivanovic, Phys. Lett. A 123, 257 (1987). [2] C. W. Helstrom, Quantum detection and estimation theory (1976). [3] A. Acín, et al., Phys. Rev. A 71, 032338 (2005). [4] B. L. Higgins, et al., Phys. Rev. Lett. 103, 220503 (2009). [5] S. Slussarenko, et al., PRL 118, 030502 (2017). [6] H. M. Wiseman and J. F. Ralph. New J. Phys. 8, 90 (2006). [7] J. Combes, et al., Phys. Rev. Lett. 100, 160503 (2008).

Proceedings Article | 7 December 2016 Presentation

Experimental optical phase measurement at the exact Heisenberg limit (Conference Presentation)

Shakib Daryanoosh, Sergei Slussarenko, Howard Wiseman, Geoff Pryde

Proceedings Volume 9996, 99960O (2016) https://doi.org/10.1117/12.2241070

KEYWORDS: Phase measurement, Metrology, Quantum optics, Entangled states, Quantum information, Quantum mechanics, Superposition, Numerical simulations, Modeling, Current controlled current source

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Optical phase measurement through its application in quantum metrology has pushed the precision limit with which some physical quantities can be measured accurately. At the very fundamental level, the laws of quantum mechanics dictate that the uncertainty in phase estimations scales as 1/N, where N is the number of quantum resources employed in the protocol [1]. This is the well known Heisenberg limit (HL) which is quadratically better than the traditional precision limit known as the standard quantum limit (SQL) with uncertainty asymptotically scaling as 1/sqrt{N} [1]. Several experiments have demonstrated that the SQL can be beaten by using an entangled state as the probe and a specific measurement scheme for ab initio estimation of unknown phases [2,3]. It has also been shown experimentally that even in the absence of the entanglement one can measure an unknown phase with imprecision scaling at the HL [4]. In this work we first present a new protocol able to estimate an optical phase at the Heisenberg limit, and then experimentally explore fundamental and practical issues in generating high-quality novel entangled states, for use in this protocol and beyond. Our aim in this study is to measure an unknown phase in the interval [0,2pi) with uncertainty attaining the exact HL. There is a condition that should be met to address this objective: preparation of an optimal state [5]. This would cover part of the presentation through which we explain how to experimentally realise such an optimal state with the current technological limitations and the feasibility of the scheme. In particular, we generate an entangled 3-photon (2-photon) state of specific superposition of GHZ (Bell) states. Our numerical simulation of the phase measurement gate together with the experimental outcomes show that the created state should have a high fidelity and purity to be able to have the phase uncertainty achieving the exact HL. Therefore, we briefly explain the modelling for experimental imperfections and finally present the results of experimental phase measurements.

Proceedings Article | 25 February 2014 Paper

Incoherent polarized white-light vecctor vortex from a q-plate

Thien An Nguyen, Yisa Rumala, Giovanni Milione, Daniel Nolan, Ebrahim Karimi, Sergei Slussarenko, Lorenzo Marrucci, Robert Alfano

Proceedings Volume 8999, 89990P (2014) https://doi.org/10.1117/12.2042111

KEYWORDS: Optical vortices, Polarization, Lamps, Spiral phase plates, Liquid crystals, Light wave propagation, Linear polarizers, Beam propagation method, Optical filters, Wave plates

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Proceedings Article | 25 February 2014 Paper

Tuning vector vortex in spatially coherent supercontinuum multicolored optical beam using q-plate

Yisa Rumala, Giovanni Milione, Thien An Nguyen, Sebastião Pratavieira, Zabir Hossain, Daniel Nolan, Sergei Slussarenko, Ebrahim Karimi, Lorenzo Marrucci, Robert Alfano

Proceedings Volume 8999, 89990D (2014) https://doi.org/10.1117/12.2042102

KEYWORDS: Polarization, Optical vortices, Source mask optimization, Multiplexing, Spiral phase plates, Optical filters, Channel projecting optics, Charge-coupled devices, Liquid crystals, Ocean optics

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Showing 5 of 8 publications

Conference Committee Involvement (1)

Photonics for Quantum 2022

6 June 2022 | Rochester, NY, United States

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