Measurement-induced Nonlocality for Gaussian States
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Theoretical Physics"
DOI: 10.1007/s10773-016-3255-9
Abstract: We establish an analytic formula of measurement-induced nonlocality (MIN) for two-mode squeezed thermal states and mixed thermal states. Different from the quantum discord case, we show that there is no Gaussian version of MIN by… read more here.
Keywords: nonlocality gaussian; induced nonlocality; measurement induced; gaussian states ... See more keywords
Dynamics of measurement-induced nonlocality under decoherence
Sign Up to like & getrecommendations! Published in 2018 at "Quantum Information Processing"
DOI: 10.1007/s11128-018-2073-9
Abstract: Measurement-induced nonlocality (MIN)—captures nonlocal effects of a quantum state due to local von Neumann projective measurements, is a bona-fide measure of quantum correlation between constituents of a composite system. In this paper, we study the… read more here.
Keywords: induced nonlocality; min min; measurement induced; dynamics measurement ... See more keywords
Measurement-induced transitions of the entanglement scaling law in ultracold gases with controllable dissipation
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.102.033316
Abstract: Recent studies of quantum circuit models have theoretically shown that frequent measurements induce a transition in a quantum many-body system, which is characterized by a change in the scaling law of the entanglement entropy from… read more here.
Keywords: measurement induced; law; scaling law; dissipation ... See more keywords
Measurement-induced quantum criticality under continuous monitoring
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.054302
Abstract: We investigate entanglement phase transitions from volume-law to area-law entanglement in a quantum many-body state under continuous position measurement on the basis of the quantum trajectory approach. We find the signatures of the transitions as… read more here.
Keywords: criticality; measurement induced; quantum criticality; induced quantum ... See more keywords
Measurement-Induced Strong Kerr Nonlinearity for Weak Quantum States of Light.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.119.013601
Abstract: Strong nonlinearity at the single photon level represents a crucial enabling tool for optical quantum technologies. Here we report on experimental implementation of a strong Kerr nonlinearity by measurement-induced quantum operations on weak quantum states… read more here.
Keywords: strong kerr; nonlinearity; measurement induced; quantum states ... See more keywords
Measurement-Induced Dark State Phase Transitions in Long-Ranged Fermion Systems
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review Letters"
DOI: 10.1103/physrevlett.128.010605
Abstract: We identify an unconventional algebraic scaling phase in the quantum dynamics of free fermions with long range hopping, which are exposed to continuous local density measurements. The unconventional phase is characterized by an algebraic entanglement… read more here.
Keywords: measurement induced; induced dark; dark state; transitions long ... See more keywords
Operator Scaling Dimensions and Multifractality at Measurement-Induced Transitions.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.128.050602
Abstract: Repeated local measurements of quantum many-body systems can induce a phase transition in their entanglement structure. These measurement-induced phase transitions (MIPTs) have been studied for various types of dynamics, yet most cases yield quantitatively similar… read more here.
Keywords: measurement induced; multifractality measurement; scaling dimensions; operator scaling ... See more keywords
Measurement-Induced Power-Law Negativity in an Open Monitored Quantum Circuit.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.080501
Abstract: Generic many-body systems coupled to an environment lose their quantum entanglement due to decoherence and evolve to a mixed state with only classical correlations. Here, we show that measurements can stabilize quantum entanglement within open… read more here.
Keywords: power law; measurement induced; law negativity; negativity ... See more keywords
Measurement-Induced Continuous Time Crystals.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.130.150401
Abstract: Strong measurements usually restrict the dynamics of measured finite dimensional systems to the Zeno subspace, where subsequent evolution is unitary due to the suppression of dissipative terms. Here, we show qualitatively different behavior induced by… read more here.
Keywords: time; measurement induced; continuous time; time crystals ... See more keywords
Cross Entropy Benchmark for Measurement-Induced Phase Transitions
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review Letters"
DOI: 10.1103/physrevlett.130.220404
Abstract: We investigate the prospects of employing the linear cross-entropy to experimentally access measurement-induced phase transitions (MIPT) without requiring any postselection of quantum trajectories. For two random circuits that are identical in the bulk but with… read more here.
Keywords: measurement induced; cross entropy; phase transitions; measurement ... See more keywords
Measurement-Induced Nonlocality for Observers Near a Black Hole
Sign Up to like & getrecommendations! Published in 2022 at "Universe"
DOI: 10.3390/universe9040199
Abstract: We present a systematic and complementary study of quantum correlations near a black hole by considering measurement-induced nonlocality (MIN). The quantum measure of interest is discussed for the fermionic, bosonic and mixed fermion–boson modes on… read more here.
Keywords: measurement induced; black hole; induced nonlocality; near black ... See more keywords