Abstract:
A programmable gate array is a circuit whose action is controlled by input data. In this paper we describe a special-purpose quantum circuit that can be programmed to evaluate the expectation value of any operator O acting on a space of states of N dimensions. The circuit has a program register whose state [Formula Presented] encodes the operator O whose expectation value is to be evaluated. The method requires knowledge of the expansion of O in a basis of the space of operators. We discuss some applications of this circuit and its relation to known instances of quantum state tomography. © 2003 The American Physical Society.
Registro:
| Documento: |
Artículo
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| Título: | Quantum gate arrays can be programmed to evaluate the expectation value of any operator |
| Autor: | Paz, J.P.; Roncaglia, A. |
| Filiación: | Departamento de Física “J.J. Giambiagi", FCEN, UBA, Ciudad Universitaria, Pabellón 1, Buenos Aires, 1428, Argentina
Theoretical Division, LANL, MSB213, Los Alamos, NM, 87545, United States
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| Año: | 2003
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| Volumen: | 68
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| Número: | 5
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| Página de inicio: | 5
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| DOI: |
http://dx.doi.org/10.1103/PhysRevA.68.052316 |
| Título revista: | Physical Review A - Atomic, Molecular, and Optical Physics
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| Título revista abreviado: | Phys Rev A
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| ISSN: | 10502947
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v68_n5_p5_Paz |
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Citas:
---------- APA ----------
Paz, J.P. & Roncaglia, A.
(2003)
. Quantum gate arrays can be programmed to evaluate the expectation value of any operator. Physical Review A - Atomic, Molecular, and Optical Physics, 68(5), 5.
http://dx.doi.org/10.1103/PhysRevA.68.052316---------- CHICAGO ----------
Paz, J.P., Roncaglia, A.
"Quantum gate arrays can be programmed to evaluate the expectation value of any operator"
. Physical Review A - Atomic, Molecular, and Optical Physics 68, no. 5
(2003) : 5.
http://dx.doi.org/10.1103/PhysRevA.68.052316---------- MLA ----------
Paz, J.P., Roncaglia, A.
"Quantum gate arrays can be programmed to evaluate the expectation value of any operator"
. Physical Review A - Atomic, Molecular, and Optical Physics, vol. 68, no. 5, 2003, pp. 5.
http://dx.doi.org/10.1103/PhysRevA.68.052316---------- VANCOUVER ----------
Paz, J.P., Roncaglia, A. Quantum gate arrays can be programmed to evaluate the expectation value of any operator. Phys Rev A. 2003;68(5):5.
http://dx.doi.org/10.1103/PhysRevA.68.052316
