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Subjects: Quantum Physics (quant-ph); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Statistical Mechanics (cond-mat.stat-mech)

Subjects: Quantum Physics (quant-ph); High Energy Physics - Theory (hep-th); Mathematical Physics (math-ph)

Jun 2, 2003 · We investigate, through a microscopic calculation, the scaling properties of entanglement in spin chain systems, both near and at a quantum critical point.

One of the fundamental problems in quantum mechanics is finding the correct quantum image of a classical observable that would correspond to experimental measurements.

The acronym QuantHEP comes from the merging of the names of the sections of the arXiv used by the QT and HEP communities, respectively: Quantum Physics (quant-ph), and High-Energy Physics (hep-ex, hep-lat, hep-ph, hep-th).

The physics archive was started in August 1991 and includes astro-ph, cond-mat, gr-qc, hep-ex, hep-lat, hep-ph, hep-th, math-ph, nucl-ex,nucl-th, physics and quant-ph. You can browse articles and view categories at the individual archive pages:

We consider the superposition measures under the action of subspace preserving and local subspace preserving channels. The theory is illustrated with models of an atom undergoing a relaxation process in a Mach-Zehnder interferometer.

Jun 12, 2023 · In this paper, we leverage symmetry to classify a family of many-body quantum states by their entanglement structure. With the help of single-particle measurements, entanglement can be harnessed to transmit quantum information in a process known as measurement-based quantum wire.