TY - GEN

T1 - Quantum discrimination for the universe

AU - Matsumura, Akira

AU - Nambu, Yasusada

N1 - Publisher Copyright:
© Proceedings of the 28th Workshop on General Relativity and Gravitation in Japan, JGRG 2018. All rights reserved.

PY - 2018

Y1 - 2018

N2 - We consider quantum discrimination between the Bunch-Davies vacuum and the stationary distribution. To get the theoretical limitation of the statistical discrimination, we assume the knowledge of qq, qp and pp correlations on a two-dimensional sphere (e.g. Last Scattering Surface). For a single direction observation with a short wave length, even if we know the qq, qp and pp correlations, the efficiency of the discrimination becomes bad, similar to the previous work B. Allen, et al (1999). However, if we can carry out the quantum measurement for 2l+1 directions, then the discrimination efficiency can be improved for the observation of a short wave length. (euqacation presented).

AB - We consider quantum discrimination between the Bunch-Davies vacuum and the stationary distribution. To get the theoretical limitation of the statistical discrimination, we assume the knowledge of qq, qp and pp correlations on a two-dimensional sphere (e.g. Last Scattering Surface). For a single direction observation with a short wave length, even if we know the qq, qp and pp correlations, the efficiency of the discrimination becomes bad, similar to the previous work B. Allen, et al (1999). However, if we can carry out the quantum measurement for 2l+1 directions, then the discrimination efficiency can be improved for the observation of a short wave length. (euqacation presented).

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M3 - Conference contribution

AN - SCOPUS:85092148013

T3 - Proceedings of the 28th Workshop on General Relativity and Gravitation in Japan, JGRG 2018

SP - 68

EP - 76

BT - Proceedings of the 28th Workshop on General Relativity and Gravitation in Japan, JGRG 2018

PB - Rikkyo University

T2 - 28th Workshop on General Relativity and Gravitation in Japan, JGRG 2018

Y2 - 5 November 2018 through 9 November 2018

ER -