Results 71 to 80 of about 1,995,098 (263)

Disorder effects on the quantum coherence of a many-boson system

open access: yes, 2012
The effects of disorders on the quantum coherence for many-bosons are studied in a double well model. For the ground state, the disorder enhances the quantum coherence.
Feng, Shiping   +3 more
core   +1 more source

Quantum coherence and geometric quantum discord [PDF]

open access: yesPhysics reports, 2017
Quantum coherence and quantum correlations are of fundamental and practical significance for the development of quantum mechanics.They are also cornerstones of quantum computation and quantum communication theory.
Ming‐Liang Hu   +5 more
semanticscholar   +1 more source

Multipartite Entanglement: A Journey through Geometry

open access: yesEntropy
Genuine multipartite entanglement is crucial for quantum information and related technologies, but quantifying it has been a long-standing challenge.
Songbo Xie   +3 more
doaj   +1 more source

Coherence generating power of unitary transformations via probabilistic average

open access: yes, 2018
We study the ability of a quantum channel to generate quantum coherence when it applies to incoherent states. Based on probabilistic averages, we define a measure of such coherence generating power (CGP) for a generic quantum channel, based on the ...
Chen, Zhihua   +3 more
core   +1 more source

Surpassing millisecond coherence in on chip superconducting quantum memories by optimizing materials and circuit design

open access: yesNature Communications
The performance of superconducting quantum circuits for quantum computing has advanced tremendously in recent decades; however, a comprehensive understanding of relaxation mechanisms does not yet exist.
S. Ganjam   +12 more
semanticscholar   +1 more source

Bounds for coherence of quantum superpositions in high dimension

open access: yesScientific Reports, 2017
Quantum coherence plays a major role in the promotion for quantum information processing and designing quantum technology. Since coherence is rooted in superposition principle, it is vital to understand the coherence change with respect to superpositions.
Qiu-Ling Yue   +3 more
doaj   +1 more source

Asymmetry and coherence weight of quantum states

open access: yes, 2018
The asymmetry of quantum states is an important resource in quantum information processing tasks such as quantum metrology and quantum communication. In this paper, we introduce the notion of $asymmetry~weight$ --- an operationally motivated asymmetry ...
Anand, Namit, Bu, Kaifeng, Singh, Uttam
core   +1 more source

Demonstrating Quantum Coherence and Metrology that is Resilient to Transversal Noise. [PDF]

open access: yesPhysical Review Letters, 2019
Quantum systems can be exploited for disruptive technologies but in practice quantum features are fragile due to noisy environments. Quantum coherence, a fundamental such feature, is a basis-dependent property that is known to exhibit a resilience to ...
Chao Zhang   +9 more
semanticscholar   +1 more source

Quantum coherence in two dimensions [PDF]

open access: yesPhysical Review D, 1994
11 pages, DAMTP-R93/15, CALT-68-1861, Tex, 3 appended uuencoded ...
Hawking, S. W., Hayward, J. D.
openaire   +3 more sources

Quantifying quantum coherence and non-classical correlation based on Hellinger distance

open access: yes, 2018
Quantum coherence and non-classical correlation are key features of quantum world. Quantifying coherence and non-classical correlation are two key tasks in quantum information theory.
Fei, Shao-Ming, Jin, Zhi-Xiang
core   +1 more source

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