many-body quantum states
Tensor Network Representation of Many-Body Quantum States and Unitary Operators
... a quantum-many body system is the pattern of entanglement individual constituents of the system have with each ...the quantum states have been represented as a superposition of ...
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The 0 7 Anomaly in Quantum Point Contact; Many Body or Single Electron Effect?
... a many-body effect, and accordingly numerous explanations have been proposed [2] [5] [6] [10] ...on quantum-mechanical superposition and interference of spin ...
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Development of Tensor Network Algorithms for Studying Classical and Quantum Many Body Systems
... for many 2D ...of states known as tensor network ...of states known as tensor product states (TPS) or projected entangled pair states (PEPS), and in terms of those states ...
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Many-body physics and the capacity of quantum channels with memory
... It is natural to ask whether the approach that we have adopted can enable progress to be made for unitary interactions other than controlled-phase gates (or their higher dimensional analogues). Some generalizations are ...
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Observation of many-body dynamics in long-range tunneling after a quantum quench
... steady-state value. Besides a broad resonance at E = 1095(2) Hz with FWHM = 172(9) Hz, two narrower resonances at E = 532(1) and 351(1) Hz with FWHM = 44(2) and 27(2) Hz can be seen. While the broad resonance is the ...
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The Interplay of Localization and Interactions in Quantum Many Body Systems
... chosen many-body Fock state, with some sites occupied and others ...microscopic states that are consistent with conservation laws should become equally likely and local observables should thereby ...
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Probing quantum many-body dynamics in nuclear systems
... In a second step, the time response of the wave- functions is computed over a finite time of typically 10 − 20 zs. The case of unbound states should be considered with care as emitted particles bounce back from ...
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Simulation of Strongly Correlated Quantum Many Body Systems
... purely quantum correlations must be short ranged. These quantum correlations tend to increase like the inverse temperature β ...short-range quantum correlations in the system and coarse-grain the ...
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Tensor Network States: Optimizations and Applications in Quantum Many-Body Physics and Machine Learning
... to quantum computations, we observe that when coupled with a novel TN tiling protocol, which we term entanglement dilution, the compression step in the ICD algorithm previously presented can also reduce the number ...
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Quantum mechanics and the big world : order, broken symmetry and coherence in quantum many-body systems
... To answer this question we again consider the canonical double-slit experiment for single electrons which we discussed in the introduction of this thesis [30, 31]. In that experiment each electron produces only one ...
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Many-Body Entanglement in Classical & Quantum Simulators
... measuring many-body entanglement in a quantum ...entangled, many-body states, there has not been a way so far to measure many-body entanglement in generic, ...
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Efficient tomography of a quantum many-body system
... locally-correlated quantum states. a. Quantum spins fixed on a 1D lattice and initialised into some separable pure ...dynamics, quantum correlations spread out with a maximum group velocity ...
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Gibbs measures of nonlinear Schrödinger equations as limits of quantum many body states in dimensions d <=3
... In the PDE literature, the existence and the invariance under (1.3) of the Gibbs measures (1.1) was first shown by Bourgain in [8,10,11] (their existence was previously essentially shown by Lebowitz, Rose, and Speer in ...
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Many-body Quantum Reaction Dynamics near the Fusion Barrier
... in many other reactions using weakly bound stable [25–36] as well as unstable beams ...of states (or resonances) above the breakup threshold, is well documented [37, ...
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Tensor networks and geometry for the modelling of disordered quantum many body systems
... are many ways that tensor networks can aid the study of disordered ...is many-body localisation (MBL), the generalisation of Anderson localisation to interacting many-body systems ...
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Adiabatic Preparation of Many-Body States in Optical Lattices
... ground states [19]. Because the kinetic energy is completely quenched, the many-body ground state is crucially determined by interactions, regardless of how weak they ...the quantum frus- ...
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Emergent SU(2) dynamics and perfect quantum many-body scars
... the many-body level statistics with the entire spectrum becoming accompany- ingly nonthermal, that could be interpreted as proximity to ...ETH-violating states in a generically ergodic spectrum, by ...
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Signatures of many-body localization in a controlled open quantum system
... In the absence of interactions, we expect excitations of atoms to higher bands to have no effect on the imbalance, as they occur on even and odd sites with identical rates and cannot affect the remaining atoms in the ...
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Spectroscopic signatures of quantum many body correlations in polariton microcavities
... probe quantum correlations in a many-body polariton system through quantum impurity ...a quantum-mechanical medium, thus forming a new quasiparticle or polaronic state [7, 8] that ...
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Mathematical Results on Quantum Many body Physics
... superconductor on a macroscopic scale. Apart from being a very success- ful physical theory, it also has a rich mathematical structure which has been extensively studied, see e.g. [40, 71, 87, 152] and references ...
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