dorsal/arxiv
View SchemaDark evolution in a time-varying Zeno subspace
| Authors | C. K. Law |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0405068 |
| URL | https://arxiv.org/abs/quant-ph/0405068 |
| DOI | 10.1103/PhysRevA.70.034101 |
Abstract
We investigate the evolution of a quantum system under the influence of sequential measurements. The measurement scheme distinguishes whether or not the system is in a specified state $| {f_n}>$ at the $n^{\rm th}$ step, where $| {f_n}>$ varies with $n$. Dark evolution corresponds to the situation when all measurements give negative results. We show that dark evolution is unitary in the continuous measurement limit. We derive the effective Hamiltonian, and indicate how $| {f_n}>$ controls quantum state transport.
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"abstract": "We investigate the evolution of a quantum system under the influence of\nsequential measurements. The measurement scheme distinguishes whether or not\nthe system is in a specified state $| {f_n}\u003e$ at the $n^{\\rm th}$ step, where\n$| {f_n}\u003e$ varies with $n$. Dark evolution corresponds to the situation when\nall measurements give negative results. We show that dark evolution is unitary\nin the continuous measurement limit. We derive the effective Hamiltonian, and\nindicate how $| {f_n}\u003e$ controls quantum state transport.",
"arxiv_id": "quant-ph/0405068",
"authors": [
"C. K. Law"
],
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"quant-ph"
],
"doi": "10.1103/PhysRevA.70.034101",
"title": "Dark evolution in a time-varying Zeno subspace",
"url": "https://arxiv.org/abs/quant-ph/0405068"
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