Results 111 to 120 of about 216,981 (383)
Operator Hydrodynamics, OTOCs, and Entanglement Growth in Systems without Conservation Laws [PDF]
, 2017 Thermalization and scrambling are the subject of much recent study from the perspective of many-body quantum systems with locally bounded Hilbert spaces (`spin chains'), quantum field theory and holography.
C. Keyserlingk +3 more
semanticscholar +1 more source
Approximate encoding of quantum states using shallow circuits
npj Quantum InformationQuantum algorithms and simulations often require the preparation of complex states through sequences of 2-qubit gates. For a generic quantum state, the number of required gates grows exponentially with the number of qubits, becoming unfeasible on near ...
Matan Ben-Dov +3 more
doaj +1 more source
Coherence of assistance and assisted maximally coherent states
Scientific Reports, 2021 Coherence and entanglement are fundamental concepts in resource theory. The coherence (entanglement) of assistance is the coherence (entanglement) that can be extracted assisted by another party with local measurement and classical communication.
Ming-Jing Zhao +3 more
doaj +1 more source
Maximally entangled state and fully entangled fraction [PDF]
Physical Review A 91, 012310 (2015), 2016 We study maximally entangled states and fully entangled fraction in general d'\otimes d (d'\geq d) systems. Necessary and sufficient conditions for maximally entangled pure and mixed states are presented. As a natural generalization of the usual fully entangled fraction for d\otimes d systems, we define the maximal overlap between a given quantum state
arxiv +1 more source
Gravitationally Induced Entanglement between Two Massive Particles is Sufficient Evidence of Quantum Effects in Gravity. [PDF]
Physical Review Letters, 2017 All existing quantum-gravity proposals are extremely hard to test in practice. Quantum effects in the gravitational field are exceptionally small, unlike those in the electromagnetic field.
C. Marletto, V. Vedral
semanticscholar +1 more source
The European Physical Journal Plus, 2013 15 pages, 4 ...
Deelan Cunden, Fabio +3 more
openaire +3 more sources
Entanglement polygon inequality in qubit systems
New Journal of Physics, 2018 We prove a set of tight entanglement inequalities for arbitrary N -qubit pure states. By focusing on all bi-partite marginal entanglements between each single qubit and its remaining partners, we show that the inequalities provide an upper bound for each
Xiao-Feng Qian +2 more
doaj +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Purpose Linear accelerator (LINAC)‐based single‐isocenter multi‐target (SIMT) treatment has streamlined the cranial stereotactic radiosurgery (SRS) workflow. Though efficient, SIMT delivery adds additional challenges that should be considered, including increased sensitivity to rotational errors for off‐isocenter targets.
Yohan A. Walter +4 more
wiley +1 more source
Entanglement versus energy in quantum spin models [PDF]
, 2004 We study entanglement properties of all eigenstates of the Heisenberg XXX model, and find that the entanglement and mixedness for a pair of nearest-neighbor qubits are completely determined by the corresponding eigenenergies. Specifically, the negativity of the eigenenergy implies pairwise entanglement.
arxiv +1 more source
The hierarchies of "witnesses" and the properties and characterization of entangled states as super entanglement witnesses [PDF]
Phys. Rev. A 97, 050302 (2018), 2016 Quantum entanglement lies at the heart of quantum mechanical and quantum information processing. Following the question who \emph{witnesses} entanglement witnesses, we show entangled states play as the role of super entanglement witnesses. We show separable states play the role of "super super entanglement witnesses" and "witness" other observables ...
arxiv +1 more source