Results 61 to 70 of about 4,229,081 (350)
Approaches for approximate additivity of the Holevo information of quantum channels [PDF]
Physical Review A, 2017 We study quantum channels that are close to another channel with weakly additive Holevo information and derive upper bounds on their classical capacity.
Felix Leditzky +3 more
semanticscholar +1 more source
Constructing a virtual two-qubit gate by sampling single-qubit operations
New Journal of Physics, 2021 We show a certain kind of non-local operations can be simulated by sampling a set of local operations with a quasi-probability distribution when the task of a quantum circuit is to evaluate an expectation value of observables.
Kosuke Mitarai, Keisuke Fujii
doaj +1 more source
Capacity Bounds via Operator Space Methods
, 2017 Quantum capacity, as the ultimate transmission rate of quantum communication, is characterized by regularized coherent information. In this work, we reformulate approximations of the quantum capacity by operator space norms and give both upper and lower ...
Gao, Li +2 more
core +1 more source
Experimental investigation of pulsed entangled photons and photonic quantum channels
, 2002 The development of key devices and systems in quantum information technology, such as entangled particle sources, quantum gates and quantum cryptographic systems, requires a reliable and well-established method for characterizing how well the devices or ...
Hiroshima, Tohya +7 more
core +1 more source
Experimental demonstration of a measurement-based realisation of a quantum channel
New Journal of Physics, 2018 We introduce and experimentally demonstrate a method for realising a quantum channel using the measurement-based model. Using a photonic setup and modifying the basis of single-qubit measurements on a four-qubit entangled cluster state, representative ...
W McCutcheon +3 more
doaj +1 more source
Volume of the space of qubit-qubit channels and state transformations under random quantum channels [PDF]
Reviews in Mathematical Physics, 30(10), 1850019. (2018), 2017 The simplest building blocks for quantum computations are the qubit-qubit quantum channels. In this paper, we analyze the structure of these channels via their Choi representation. The restriction of a quantum channel to the space of classical states (i.e. probability distributions) is called the underlying classical channel.
arxiv +1 more source
The Regulation of Trace Metal Elements in Cancer Ferroptosis
Advanced Biology, EarlyView.The induction of ferroptosis inhibits tumor growth, enhances anticancer efficacy, and overcomes drug resistance. Recent evidence shows nonferrous metal elements play a role in ferroptosis. This review focuses on how trace metals regulate ferroptosis processes like iron accumulation, lipid peroxidation, and antioxidant defense.
Xiaoyan Wang +5 more
wiley +1 more source
Performance Analysis of Quantum Channels [PDF]
International Workshop on Signal Processing Advances in Wireless Communications, 2018 We study the quality of service in quantum channels. We regard the quantum channel as a queueing system, and present queueing analysis of both the classical information transmission and quantum information transmission in the quantum channel.
Fengyou Sun
semanticscholar +1 more source
Behavior of Quantum Correlations under Local Noise
, 2011 We characterize the behavior of quantum correlations under the influence of local noisy channels. Intuition suggests that such noise should be detrimental for quantumness. When considering qubit systems, we show for which channel this is indeed the case:
Bruß, Dagmar +2 more
core +1 more source
Learning a quantum channel from its steady-state
New Journal of PhysicsWe present a scalable method for learning local quantum channels using local expectation values measured on a single state—their steady state. Our method is inspired by the algorithms for learning local Hamiltonians from their ground states.
Yigal Ilin, Itai Arad
doaj +1 more source