Results 21 to 30 of about 32,332 (263)

Establishing and storing of deterministic quantum entanglement among three distant atomic ensembles

open access: yesNature Communications, 2017
Continuous-variable encoding is a promising approach for quantum information and communication networks. Here, the authors show how to map entanglement from three spatial optical modes to three separated atomic samples via electromagnetically induced ...
Zhihui Yan   +8 more
doaj   +1 more source

Hybrid quantum computation in quantum optics [PDF]

open access: yesPhysical Review A, 2008
We propose a hybrid quantum computing scheme where qubit degrees of freedom for computation are combined with quantum continuous variables for communication. In particular, universal two-qubit gates can be implemented deterministically through qubit-qubit communication, mediated by a continuous-variable bus mode ("qubus"), without direct interaction ...
van Loock, P.   +6 more
openaire   +5 more sources

Electronic energy transfer in single conjugated polymer molecules revealed by phase-modulated pulse-pair controlled single molecule spectroscopy

open access: yesAIP Advances, 2021
Detailed understanding of the electronic energy transfer dynamics in conjugated polymer molecules and their conformation dependence is central for improving the photophysical properties as well as the performance of devices based on conjugated polymers ...
Ruiyun Chen   +7 more
doaj   +1 more source

Optical Quantum Computing [PDF]

open access: yesScience, 2007
In 2001, all-optical quantum computing became feasible with the discovery that scalable quantum computing is possible using only single-photon sources, linear optical elements, and single-photon detectors. Although it was in principle scalable, the massive resource overhead made the scheme practically daunting.
openaire   +4 more sources

Impedance self-matching ultra-narrow linewidth fiber resonator by use of a tunable π-phase-shifted FBG

open access: yesScientific Reports, 2017
In this paper, we present a novel ultra-narrow linewidth fiber resonator formed by a tunable polarization maintaining (PM) π-phase-shifted fiber Bragg grating and a PM uniform fiber Bragg grating with a certain length of PM single mode fiber patch cable ...
Mingyong Jing   +6 more
doaj   +1 more source

Impact of Humidity on Quartz-Enhanced Photoacoustic Spectroscopy Based CO Detection Using a Near-IR Telecommunication Diode Laser

open access: yesSensors, 2016
A near-IR CO trace gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) is evaluated using humidified nitrogen samples. Relaxation processes in the CO-N2-H2O system are investigated.
Xukun Yin   +10 more
doaj   +1 more source

Measurement of Stokes-operator squeezing for continuous-variable orbital angular momentum

open access: yesScientific Reports, 2017
We demonstrate experimentally a measurement scheme for the Stokes operators for the continuous-variable squeezed states of orbital angular momentum (OAM).
Jun Guo   +5 more
doaj   +1 more source

Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis

open access: yesApplied Sciences, 2020
A fast and highly sensitive polymer nano-mechanical thermal analysis method for determining the melting temperature (Tm) of polymer microwires was proposed.
Shangzhi Li   +6 more
doaj   +1 more source

Experimental demonstration of multiparty quantum secret sharing and conference key agreement

open access: yesnpj Quantum Information, 2023
Quantum secret sharing (QSS) and conference key agreement (CKA) provide efficient encryption approaches for realizing multi-party secure communication, which are essential components of quantum networks. In this work, a practical, scalable, verifiable (k,
Shuaishuai Liu   +5 more
doaj   +1 more source

Tilt Measurement at the Quantum Cramer–Rao Bound Using a Higher-Order Hermite–Gaussian Mode

open access: yesPhotonics, 2023
The quantum Cramer–Rao bound (QCRB) provides an ultimate precision limit in parameter estimation. The sensitivity of spatial measurements can be improved by using the higher-order Hermite–Gaussian mode.
Zhi Li   +4 more
doaj   +1 more source

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