Results 11 to 20 of about 1,386,672 (261)

Atom-optically synthetic gauge fields for a noninteracting Bose gas

open access: yesLight: Science & Applications, 2022
A two-leg ladder with tunable gauge fields is achieved by one-dimensional synthetic momentum-state lattice of a noninteracting Bose gas.
Yuqing Li   +9 more
doaj   +1 more source

Optical driving, spin initialization and readout of single SiV− centers in a Fabry-Perot resonator

open access: yesCommunications Physics, 2023
Large-scale quantum communication networks require quantum repeaters due to the signal attenuation in optical fibers. Ideal quantum repeater nodes efficiently link a quantum memory with photons serving as flying qubits.
Gregor Bayer   +10 more
doaj   +1 more source

Continuous entanglement distribution over a transnational 248 km fiber link

open access: yesNature Communications, 2022
Fibre-based entanglement distribution represents a key primitive for quantum applications such as QKD. Here, the authors demonstrate it across 248 km of deployed fiber, observing stable detected pair rates of 9 Hz for 110 h.
Sebastian Philipp Neumann   +4 more
doaj   +1 more source

High-performance cavity-enhanced quantum memory with warm atomic cell

open access: yesNature 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

Testing universality of Feynman-Tan relation in interacting Bose gases using high-order Bragg spectra

open access: yesLight: 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

Quantum optics for beginners [PDF]

open access: yes, 2014
This graduate-level text discusses from first principles the background theory of various effects of quantum optics, introduces students to the main ideas of quantum optics as clearly as possible, and teaches the mathematical methods used by researchers ...
Wahiddin, Mohamed Ridza, Ficek, Zbigniew
core   +2 more sources

Long-lived and multiplexed atom-photon entanglement interface with feed-forward-controlled readouts

open access: yesCommunications 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 cores of optical phase singularities [PDF]

open access: yes, 2004
The nodal line singularities (optical vortices) of classical scalar optics are smoothed in quantum optics, because of spontaneous emission into unoccupied modes. The radius of the 'quantum core' surrounding each classical singularity is proportional to ??
Dennis, MR   +5 more
core   +1 more source

Classical and Quantum Nonlinear Optical Information Processing [PDF]

open access: yes, 2006
This thesis is a theoretical investigation of the classical and quantum information processing enabled by the advent of modern ultrafast nonlinear optics.
Tsang, Mankei
core   +1 more source

Fiber-Coupled Ultra-High-Q Microresonators for Nonlinear and Quantum Optics [PDF]

open access: yes, 2004
The ability to confine optical energy in small volumes for long periods of time is desirable for a number of applications, ranging from photonics and nonlinear optics, to fundamental studies in quantum electrodynamics.
Spillane, Sean Michael
core   +1 more source

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