Aligning reference frames with quantum states

E. Bagan; M. Baig; R. Muñoz-Tapia

doi:https://doi.org/10.1103/PhysRevLett.87.257903

Aligning reference frames with quantum states

E. Bagan, M. Baig, R. Muñoz-Tapia

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

60 Citations (Scopus)

Abstract

We analyze the problem of sending, in a single transmission, the information required to specify an orthogonal trihedron or reference frame through a quantum channel made out of N elementary spins. We analytically obtain the optimal strategy, i.e., the best encoding state and the best measurement. For large N, we show that the average error goes to zero linearly in 1/N. Finally, we discuss the construction of finite optimal measurements. © 2001 The American Physical Society.

Original language	English
Pages (from-to)	257903-1-257903-4
Journal	Physical Review Letters
Volume	87
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.87.257903
Publication status	Published - 17 Dec 2001

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title = "Aligning reference frames with quantum states",

abstract = "We analyze the problem of sending, in a single transmission, the information required to specify an orthogonal trihedron or reference frame through a quantum channel made out of N elementary spins. We analytically obtain the optimal strategy, i.e., the best encoding state and the best measurement. For large N, we show that the average error goes to zero linearly in 1/N. Finally, we discuss the construction of finite optimal measurements. {\textcopyright} 2001 The American Physical Society.",

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N2 - We analyze the problem of sending, in a single transmission, the information required to specify an orthogonal trihedron or reference frame through a quantum channel made out of N elementary spins. We analytically obtain the optimal strategy, i.e., the best encoding state and the best measurement. For large N, we show that the average error goes to zero linearly in 1/N. Finally, we discuss the construction of finite optimal measurements. © 2001 The American Physical Society.

AB - We analyze the problem of sending, in a single transmission, the information required to specify an orthogonal trihedron or reference frame through a quantum channel made out of N elementary spins. We analytically obtain the optimal strategy, i.e., the best encoding state and the best measurement. For large N, we show that the average error goes to zero linearly in 1/N. Finally, we discuss the construction of finite optimal measurements. © 2001 The American Physical Society.

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M3 - Article

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Aligning reference frames with quantum states

Abstract

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