195 citations · 834 across the 19 of their papers we have counts for
19 papers
Spontaneous Symmetry Breaking of an Optical Polarization State in a Polarization-Selective Nonlinear Resonator
K. S. Manannikov, E. I. Mironova, A. S. Poliakov +3
We exploit polarization self-rotation in atomic rubidium vapor to observe spontaneous symmetry breaking and bistability of polarization patterns. We pump the vapor cell with horizo…
Continuous-variable quantum tomography of high-amplitude states
Ekaterina Fedotova, Nikolai Kuznetsov, Egor Tiunov +2
Quantum state tomography is an essential component of modern quantum technology. In application to continuous-variable harmonic-oscilator systems, such as the electromagnetic field…
Synthetic-reflection self-injection-locked microcombs
Alexander E. Ulanov, Thibault Wildi, Nikolay G. Pavlov +3
Laser-driven microresonators have enabled chip-integrated light sources with unique properties, including the self-organized formation of ultrashort soliton pulses and frequency co…
Dual-laser self-injection locking to an integrated microresonator
Dmitry A. Chermoshentsev, Artem E. Shitikov, Evgeny A. Lonshakov +7
Diode laser self-injection locking (SIL) to a whispering gallery mode of a high quality factor resonator is a widely used method for laser linewidth narrowing and high-frequency no…
Adaptation of Quadruped Robot Locomotion with Meta-Learning
Arsen Kuzhamuratov, Dmitry Sorokin, Alexander Ulanov +1
Animals have remarkable abilities to adapt locomotion to different terrains and tasks. However, robots trained by means of reinforcement learning are typically able to solve only a…
Aligning an optical interferometer with beam divergence control and continuous action space
Stepan Makarenko, Dmitry Sorokin, Alexander Ulanov +1
Reinforcement learning is finding its way to real-world problem application, transferring from simulated environments to physical setups. In this work, we implement vision-based al…
Interferobot: aligning an optical interferometer by a reinforcement learning agent
Dmitry Sorokin, Alexander Ulanov, Ekaterina Sazhina +1
Limitations in acquiring training data restrict potential applications of deep reinforcement learning (RL) methods to the training of real-world robots. Here we train an RL agent t…
Reinforcement Learning Enhanced Quantum-inspired Algorithm for Combinatorial Optimization
Dmitrii Beloborodov, A. E. Ulanov, Jakob N. Foerster +2
Quantum hardware and quantum-inspired algorithms are becoming increasingly popular for combinatorial optimization. However, these algorithms may require careful hyperparameter tuni…
Quantum-inspired annealers as Boltzmann generators for machine learning and statistical physics
Alexander E. Ulanov, Egor S. Tiunov, A. I. Lvovsky
Quantum simulators and processors are rapidly improving nowadays, but they are still not able to solve complex and multidimensional tasks of practical value. However, certain numer…
Experimental quantum homodyne tomography via machine learning
E. S. Tiunov, V. V. Tiunova, A. E. Ulanov +2
Complete characterization of states and processes that occur within quantum devices is crucial for understanding and testing their potential to outperform classical technologies fo…
Observation of Multimode Strong Coupling of Cold Atoms to a 30-m Long Optical Resonator
Aisling Johnson, Martin Blaha, Alexander E. Ulanov +3
We report on the observation of multimode strong coupling of a small ensemble of atoms interacting with the field of a 30-m long fiber resonator containing a nanofiber section. The…
Annealing by simulating the coherent Ising machine
Egor S. Tiunov, Alexander E. Ulanov, A. I. Lvovsky
The coherent Ising machine (CIM) enables efficient sampling of low-lying energy states of the Ising Hamiltonian with all-to-all connectivity by encoding the spins in the amplitudes…
Entanglement and teleportation between polarization and wave-like encodings of an optical qubit
Demid V. Sychev, Alexander E. Ulanov, Anastasia A. Pushkina +3
Light is an irreplaceable means of communication among various quantum information processing and storage devices. Due to their different physical nature, some of these devices cou…
Breeding the optical Schroedinger's cat state
Demid V. Sychev, Alexander E. Ulanov, Anastasia A. Pushkina +3
Superpositions of macroscopically distinct quantum states, introduced in Schroedinger's famous Gedankenexperiment, are an epitome of quantum "strangeness" and a natural tool for de…
Synthesis of the Einstein-Podolsky-Rosen entanglement in a sequence of two single-mode squeezers
Ilya A. Fedorov, Alexander E. Ulanov, Yury V. Kurochkin +1
Synthesis of the Einstein-Podolsky-Rosen entangled state --- the primary entangled resource in continuous-variable quantum-optical information processing --- is a technological cha…
A scheme for quantum teleportation between discrete and continuous encodings of an optical qubit
Alexander E. Ulanov, Demid Sychev, Anastasia A. Pushkina +2
Transfer of quantum information between physical systems of a different nature is a central matter in quantum technologies. Particularly challenging is the transfer between discret…
Loss-tolerant quantum enhanced metrology and state engineering via the reverse Hong-Ou-Mandel effect
Alexander E. Ulanov, Ilya A. Fedorov, Demid Sychev +2
Preparing highly entangled quantum states between remote parties is a major challenge for quantum communications [1-8]. Particularly promising in this context are the N00N states,…
Undoing the effect of loss on quantum entanglement
Alexander E. Ulanov, Ilya A. Fedorov, Anastasia A. Pushkina +3
Entanglement distillation is a process via which the strength and purity of quantum entanglement can be increased probabilistically. It is a key step in many quantum communication…
Quantum vampire: collapse-free action at a distance by the photon annihilation operator
Ilya A. Fedorov, Alexander E. Ulanov, Yury V. Kurochkin +1
A nonclassical state of light is distributed, via a beam splitter, between two remote parties. One of the parties applies the photon annihilation operator to its portion of the sta…