Haut PDF Entanglement in non-unitary quantum critical spin chains
Entanglement in non-unitary quantum critical spin chains
... 2016) Entanglement entropy has proven invaluable to our understanding of quantum ...“non-unitary quantum mechanics”, which has seen growing interest from areas as diverse as open ...
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Criticality without Frustration for Quantum Spin-1 Chains
... for Quantum Information, Slovak Academy of Sciences, Bratislava, Slovakia (Received 24 August 2012; published 16 November 2012) Frustration-free (FF) spin chains have a property that their ground ...
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Choreographed entanglement dances: Topological states of quantum matter
... by spin-1’s on each ...direct entanglement between two spin- 1’s (represented by the blue curves) can only appear be- tween the neighboring effective ...an unitary transformation acting within ...
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Bifurcation in entanglement renormalization group flow of a gapped spin model
... finite-depth quantum circuits U,V are exact. In this section, we will refer to local degrees of freedom as ...multiscale entanglement renormalization ansatz (MERA) states [ 3 , 23 ...the ...
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Periodically driven random quantum spin chains : Real-Space Renormalization for Floquet localized phases
... random quantum Ising chain ...the critical properties are expected to be described exactly in the asymptotic regime by the appropriate Strong Disorder RG rules [26, ...
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Coherent-state transfer via highly mixed quantum spin chains
... perfect spin transfer, even using highly mixed ...more spin pairs with engineered couplings in the chain allows for the perfect transfer of quantum information and potentially of ...
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Advanced integrability techniques and analysis for quantum spin chains
... disorder in the sample or of its geometry 3 ...associated critical exponents is a famous still unsolved ...electrons in a disordered po- tential moving from one Landau level to another, that is both ...
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The action of the Virasoro algebra in quantum spin chains. Part I. The non-rational case
... are in the extended Kac table, h = h r,s with r, s ∈ N ∗ . While in unitary CFTs the resulting degenerate behaviour implies the existence of certain differential equations satisfied by the ...
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Temperature dependence of the NMR relaxation rate $1/T_1$ for quantum spin chains
... the non-trivial crossover occurring in critical chains between the high-temperature diffusive classical regime and the low-temperature response described by the Tomonaga-Luttinger liquid (TLL) ...
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Density of States of Quantum Spin Systems from Isotropic Entanglement
... developments in QMBS research such as matrix product states [ 8 , 9 ], and density matrix renor- malization group [ 10 ], where the state (usually the ground state of one-dimensional chains) can be ...
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Stochastic dissipative quantum spin chains (I) : Quantum fluctuating discrete hydrodynamics
... and quantum, is one of the main current focuses of both theoretical and experimental condensed matter ...physics. In the classical theory, important theoretical progresses were recently achieved by solving ...
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Entanglement distribution over 150 km in wavelength division multiplexed channels for quantum cryptography
... allow entanglement dis- tribution in up to 31 standard channel pairs using off- the-shelves, and high-performance multi-channel DWDM components ...energy-time entanglement, we employ a set of ...
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Spin-Exchange Interaction in ZnO-based Quantum Wells
... efficient Quantum Confined Stark Effect (QCSE), the short-range electron-hole exchange interaction redistributes oscillator strengths among exciton states built from different valence ...
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Realizability in the Unitary Sphere
... for non-deterministic computations [13]. And, in general, if we consider the standard values of the lambda calculus as the basis, then linear combinations of those form a vector space, which can be ...
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Long-range spin transfer in triple quantum dots
... Semiconductor quantum dot arrays provide a fully tunable platform for manipulating the coherent coupling of quantum ...strated in the double quantum dot system with the obser- vation of ...
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Investigation, realization, and entanglement characterization of complex optical quantum states.
... it. In order to address the challenge of a complete entan- glement characterization, we developed a multipartite d-level entanglement witness that is capable of detecting the presence of any arbitrarily ...
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Fast exciton spin relaxation in single quantum dots
... 78.66.Fd Spin memory effects in semiconductor quantum dots (QDs) attract presently much attention in the physics of ...carriers in QDs is expected to lead to an inhi- bition of the main ...
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Quantum interference in exciton-Mn spin interactions in a CdTe semiconductor quantum dot
... laser in the range 570–610 ...single quantum dots containing a single Mn 2 þ ...observed in the same ...lines in the low-energy tail of the broad PL emission band [ 9 , 25 ], which assured ...
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Spin Excitations of the Spin-Polarized Electron Gas in Semimagnetic Quantum Wells
... two spin subbands with, in the absence of carriers, the splitting described by a modified Brillouin function ...at non vanishing field into four new structures associated with spin conserving ...
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Quantum Primitives for Secure Two-party Computations and Entanglement Attacks
... Mor05]. In the other direction, one would find out practically physical channels that match the theoretical ...of quantum mechanics into the field of communication and cryptography [Wie83], the successful ...
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