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Arina in Physics

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Arina in Physics

My work

On this page you can read about my publications, my projects and conferences, and my workshops. You can download my CV (updated 2023), and also my thesis, "Two-mode squeezing in a cold atomic ensemble" (2018).

My Publications

  1. Nicholas Milson, Arina Tashchilina, Tian Ooi, Anna Prus-Czarnecka, Zaheen F. Ahmad, and Lindsay J. LeBlanc “High-dimensional reinforcement learning for optimization and control of ultracold quantum gases”, Mach. Learn.: Sci. Technol. 4 045057 (2023), URL https://doi.org/10.1088/2632-2153/ad1437
  2. Arina Tashchilina, Logan W. Cooke, Joseph Lindon, E. S. Moiseev, and Lindsay J. LeBlanc “Raman coupling beyond adiabatic approximation”, in preparation.
  3. Logan W. Cooke, Arina Tashchilina, Mason Protter, Joseph Lindon, Tian Ooi, Frank Marsiglio, Joseph Maciejko, and Lindsay J. LeBlanc “Floquet-engineered holonomic gate operations are not robust”, Phys. Rev. Research 6, 013057, (2024), URL https://doi.org/10.1103/physrevresearch.6.013057
  4. Joseph Lindon, Arina Tashchilina, Logan W. Cooke, and Lindsay J. LeBlanc “Complete Unitary Qutrit Control in Ultracold Atoms", Phys. Rev. Applied, 19, 034089 (2023), URL https://doi.org/10.1103/physrevapplied.19.034089
  5. Arina Tashchilina, E. S. Moiseev, Xinxin Guo and A. I. Lvovsky “Generation of two-mode squeezing between atoms and light”, in preparation
  6. E S Moiseev, Arina Tashchilina, S A Moiseev and Barry C Sanders, “Broadband quantum memory in a cavity via zero spectral dispersion”, New J. Phys. 23, 063071 (2021)
  7. E S Moiseev, Arina Tashchilina, S A Moiseev and A I Lvovsky “Darkness of two-mode squeezed light in Λ-type atomic system” New J. Phys. 22 013014 (2020)
  8. AY Tashchilina, “Two-mode squeezing in a cold atomic ensemble”, Thesis, (2019)
  9. Fan Yang, Arina Tashchilina, E. S. Moiseev, Christoph Simon, and A. I. Lvovsky, “Far-field linear optical superresolution via heterodyne detection in a higher-order local oscillator mode,” Optica 3, 1148-1152 (2016)
  10. Xiao-hui Fang, Ming-lie Hu, Li-li Huang, Lu Chai, Neng-li Dai, Jin-yan Li, A. Yu. Tashchilina, Aleksei M. Zheltikov, and Ching-yue Wang, “Multiwatt octave-spanning supercontinuum generation in multicore photonic-crystal fiber,” Opt. Lett. 37, 2292-2294 (2012)
  11. I V Fedotov, N A Safronov, Yu A Shandarov, A Yu Tashchilina, A B Fedotov, A P Nizovtsev, D I Pustakhod, V N Chizevski, T V Matveeva, K Sakoda, S Ya Kilin and A M Zheltikov, “Photonic-crystal-fiber-coupled photoluminescence interrogation of nitrogen vacancies in diamond nanoparticles " Laser Phys. Lett. 9 151 (2011)
  12. Fedotov, I.V., Tashchilina, A.Y., Doronina, L.V. et al. Nanoparticles in a nanowaveguide: Enhanced-functionality optical systems based on micro- and nanowaveguide structures doped with nanoparticles. Nanotechnol Russia 5, 266–270 (2010).

My Projects and Conferences

Broadband quantum memory

How we can achieve broad and full-range absorption simultaneously.
Abstract

We seek to design experimentally feasible broadband, temporally multiplexed optical quantum memory with near-term applications to telecom bands. Specifically, we devise dispersion compensation for an impedance-matched narrow-band quantum memory by exploiting Raman processes over two three-level atomic subensembles, one for memory and the other for dispersion compensation. Our proposed broadband quantum memory employs three-level atoms with atomic density, cavity quality, and Raman-laser power and detuning chosen such that inverse cavity lifetime equals optical depth, the delay-bandwidth product exceeds 106, power efficiency exceeding 90% and at least one second of storage time, thereby leading to 106 modes for multiplexing. Our design will lead to significant multiplexing enhancement for quantum repeaters to be used for telecom quantum networks.

Presented

  1. 2021 Arina Tashchilina, Eugene Moiseev, Sergey Moiseev, and Barry Sanders, “Broadband quantum memory in a cavity via zero spectral dispersion”, CAP virtual congress (Talk, June 6 – 11)
  2. 52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics, Volume 66, Number 6

Suppression of Raman Interaction Due to Destructive Interference in Alkali Atoms

Abstract

Raman interaction is viable tool for numerous implementations of quantum technologies with cold atomic gas.

The conventional three-level effective theory of Raman interaction manifests that the fidelity of the Raman-induced rotation grows inversely proportional to single photon detuning. Here we show, that this is wrong for alkali atoms due to their multi-level structure.

The destructive interference of the hyperfine sub-levels fully suppress Raman interaction at large detuning leaving us with some finite optimal fidelity compare to asymptotically ideal theoretical case. We experimentally show the effect on Rb-87 and discuss how it impacts the fidelity of quantum gates and efficiency of quantum memories.

Presented

  1. 2021 Arina Tashchilina, Joseph Lindon, Eugene Moiseev, Logan W. Cooke, and Lindsay J. LeBlanc, “Suppression of Raman Interaction Due to Destructive Interference in Alkali Atoms”, Quantum days (Poster)
  2. 2022 Arina Tashchilina, Logan W. Cooke, Joseph Lindon, Eugene Moiseev, and Lindsay J. LeBlanc, “Suppression of Raman Interaction Due to Destructive Interference in Alkali Atoms”, DAMOP meeting, Orlando, Florida, USA (Poster, May 30 – June 3)
  3. 2022 Arina Tashchilina, Logan W. Cooke, Joseph Lindon, Eugene Moiseev, and Lindsay J. LeBlanc, “Suppression of Raman Interaction Due to Destructive Interference in Alkali Atoms”, CAP congress, Hamilton, Canada (Talk, June 5-10)
  4. 2023 Arina Tashchilina, Logan Cooke, Evgeny Moiseev, Joseph Lindon, Tian Ooi, Nicholas Milson, and Lindsay LeBlanc, “Suppressing and tuning-out Raman transitions in multilevel alkali atoms via multi-path interference”, DAMOP meeting, Spokane, Washington, USA (Talk, June 6)
  5. 2023 Arina Tashchilina and Lindsay LeBlanc, “Suppressing and tuning-out Raman transitions in multilevel alkali atoms via multi-path interference”, Quanta Create, Edmonton, Canada (Talk, July 31)

Two-mode squeezing in cold atomic ensembles

Abstract

Two-mode quadrature squeezed light is a valuable resource for fundamental quantum entanglement study and quantum metrology. In this work we demonstrate a new scheme for squeezing generation. Making use of cavity-enhanced double-\(\Lambda\) four-wave mixing, we report –3.6~dB of squeezing (after correcting for losses),which is a record for a cold atomic ensemble. Our result opens new possibilities for studies and applications of squeezed light.

Presented

  1. 2022 Arina Tashchilina, Barry Sanders, Eugene Moiseev, Alexander Lvovsky, Sergey Moi- seev, and Xianxin Guo, “Two-mode squeezing in cold atomic ensembles”, DAMOP meeting, Orlando, Florida, USA (Talk, May 30 – June 3)

High-dimensional reinforcement learning for ultracold quantum gases

Our Reinforcement learning agent
Abstract

Machine-learning techniques are emerging as a valuable tool in experimental physics, and among them, reinforcement learning offers the potential to control high-dimensional, multistage processes in the presence of fluctuating environments. In this {\color{blue} experimental} work, we apply reinforcement learning to the preparation of an ultracold quantum gas to realize a consistent and large number of atoms at microkelvin temperatures. This reinforcement learning agent determines an optimal set of thirty control parameters in a dynamically changing environment that is characterized by thirty sensed parameters. By comparing this method to that of training supervised-learning regression models, as well as to human-driven control schemes, we find that both machine learning approaches accurately predict the number of cooled atoms and both result in occasional superhuman control schemes. However, only the reinforcement learning method achieves consistent outcomes, even in the presence of a dynamic environment.

Presented

  1. 2023 Arina Tashchilina, Nicholas Milson, Tian Ooi, Anna Prus-Czarnecka, and Lindsay J. LeBlanc, “Towards robust neutral-atom BEC production with the help of machine learning”, DAMOP meeting, Spokane, Washington, USA (Poster, June 6)
  2. 2023 Arina Tashchilina, Nicholas Milson, Tian OOi, and Lindsay J. LeBlanc, “Towards robust neutral-atom BEC production with the help of machine learning”, CAP congress, Fredericton, Canada (Talk, June 21)
  3. 2023 Arina Tashchilina and Lindsay LeBlanc, “Ultracold system for quantum simulation”, Quantum Alberta Research Showcase, Calgary, Canada (Poster, November 15)

My Workshops

Quantum simulation

I gave a few lectures on basics of quantum computation and quantum simulation. You can see my presentation slides.

Quantum memories

Saving and restoring signal after the desired delay.
I taught a workshop on basics of quantum memories for Quanta Create, where we covered basics of memories based on atomic ensembles.

Quantum paradoxes

I am trying to address future scientists by teaching school students basics of quantum mechanics.

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