dorsal/arxiv
View SchemaGeneral linear-optical quantum state generation scheme: Applications to maximally path-entangled states
| Authors | N. M. VanMeter, P. Lougovski, D. B. Uskov, K. Kieling, J. Eisert, Jonathan P. Dowling |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0612154 |
| URL | https://arxiv.org/abs/quant-ph/0612154 |
| DOI | 10.1103/PhysRevA.76.063808 |
| Journal | Phys. Rev. A 76, 063808 (2007) |
Abstract
We introduce schemes for linear-optical quantum state generation. A quantum state generator is a device that prepares a desired quantum state using product inputs from photon sources, linear-optical networks, and postselection using photon counters. We show that this device can be concisely described in terms of polynomial equations and unitary constraints. We illustrate the power of this language by applying the Grobner-basis technique along with the notion of vacuum extensions to solve the problem of how to construct a quantum state generator analytically for any desired state, and use methods of convex optimization to identify bounds to success probabilities. In particular, we disprove a conjecture concerning the preparation of the maximally path-entangled |n,0)+|0,n) (NOON) state by providing a counterexample using these methods, and we derive a new upper bound on the resources required for NOON-state generation.
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"abstract": "We introduce schemes for linear-optical quantum state generation. A quantum\nstate generator is a device that prepares a desired quantum state using product\ninputs from photon sources, linear-optical networks, and postselection using\nphoton counters. We show that this device can be concisely described in terms\nof polynomial equations and unitary constraints. We illustrate the power of\nthis language by applying the Grobner-basis technique along with the notion of\nvacuum extensions to solve the problem of how to construct a quantum state\ngenerator analytically for any desired state, and use methods of convex\noptimization to identify bounds to success probabilities. In particular, we\ndisprove a conjecture concerning the preparation of the maximally\npath-entangled |n,0)+|0,n) (NOON) state by providing a counterexample using\nthese methods, and we derive a new upper bound on the resources required for\nNOON-state generation.",
"arxiv_id": "quant-ph/0612154",
"authors": [
"N. M. VanMeter",
"P. Lougovski",
"D. B. Uskov",
"K. Kieling",
"J. Eisert",
"Jonathan P. Dowling"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.76.063808",
"journal_ref": "Phys. Rev. A 76, 063808 (2007)",
"title": "General linear-optical quantum state generation scheme: Applications to maximally path-entangled states",
"url": "https://arxiv.org/abs/quant-ph/0612154"
},
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