Results 21 to 30 of about 1,399,436 (192)
High-performance cavity-enhanced quantum memory with warm atomic cell
Nature Communications, 2022 Quantum memories usually suffer from a trade-off between efficiency and excess noise. Here, by exploiting the time-reversal approach for improving modes matching, the authors show a warm-atomic-cell-based cavity-enhanced memory with 67% efficiency and ...
Lixia Ma +8 more
doaj +1 more source
Reconstructing Quantum States With Quantum Reservoir Networks [PDF]
IEEE Transactions on Neural Networks and Learning Systems, 2021 Reconstructing quantum states is an important task for various emerging quantum technologies. The process of reconstructing the density matrix of a quantum state is known as quantum state tomography. Conventionally, tomography of arbitrary quantum states is challenging as the paradigm of efficient protocols has remained in applying specific techniques ...
Sanjib Ghosh +4 more
openaire +4 more sources
Continuous Variable Quantum State Sharing via Quantum Disentanglement [PDF]
, 2005 Quantum state sharing is a protocol where perfect reconstruction of quantum states is achieved with incomplete or partial information in a multi-partite quantum networks.
A. Furusawa +9 more
core +1 more source
On the determination of pure quantum states by the homodyne detection
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016 The methods of reconstruction of the wave function of a pure state of a quantum system by quadrature distribution measured experimentally by the homodyne detection are considered.
Andrey I Dnestryan
doaj +1 more source
Light: Science & Applications, 2023 The Feynman-Tan relation, obtained by combining the Feynman energy relation with the Tan’s two-body contact, can explain the excitation spectra of strongly interacting 39K Bose-Einstein condensate (BEC).
Yunfei Wang +7 more
doaj +1 more source
Thermalization of quantum states [PDF]
Journal of Mathematical Physics, 1999 An exact stochastic model for the thermalization of quantum states is proposed. The model has various physically appealing properties. The dynamics are characterized by an underlying Schrödinger evolution, together with a nonlinear term driving the system toward an asymptotic equilibrium state and a stochastic term reflecting fluctuations.
Brody, Dorje C., Hughston, Lane P.
openaire +3 more sources
Fidelity and information in the quantum teleportation of continuous variables [PDF]
, 2000 Ideally, quantum teleportation should transfer a quantum state without distortion and without providing any information about that state. However, quantum teleportation of continuous electromagnetic field variables introduces additional noise, limiting ...
Furusawa, Akira +3 more
core +4 more sources
Long-lived and multiplexed atom-photon entanglement interface with feed-forward-controlled readouts
Communications Physics, 2021 The quantum interface to generate entanglement between a flying photonic qubit and a stationary qubit is a key functionality for the quantum internet. The authors demonstrate a multiplexed quantum interface that stores three long-lived spin-wave qubits ...
Sheng-zhi Wang +6 more
doaj +1 more source
Quantum state majorization at the output of bosonic Gaussian channels [PDF]
, 2014 Quantum communication theory explores the implications of quantum mechanics to the tasks of information transmission. Many physical channels can be formally described as quantum Gaussian operations acting on bosonic quantum states. Depending on the input
Giovannetti, Vittorio +2 more
core +2 more sources
On quantum operations as quantum states [PDF]
Annals of Physics, 2004 Revtex, 14 pages, v4: changed ...
Arrighi, Pablo, Patricot, Christophe
openaire +3 more sources