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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| QIT (2nd) |
2023-12-18 17:20 |
Okinawa | OIST (Primary: On-site, Secondary: Online) |
Classical gravitational effect on standard quantum limit of finite-size optical lattice clock in estimating gravitational potential Fumiya Nishimura, Yui Kuramochi, Kazuhiro Yamamoto (kyushu Univ.) |
We evaluated the accuracy limit for estimating gravitational potential using optical lattice clocks by utilizing the qua... [more] | |
| QIT (2nd) |
2023-12-17 17:30 |
Okinawa | OIST (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Optimal POVM with minimal size in two-parameter qubit-state estimation Jianchao Zhang, Jun Suzuki (UEC) |
In the realm of qubit state tomography, the accurate estimation of quantum states parameterized across the complete Bloc... [more] | |
| QIT (2nd) |
2023-05-29 15:15 |
Kyoto | Katsura Campus, Kyoto University | Exponentially tighter cost bound of quantum error mitigation in scrambling quantum circuits Kento Tsubouchi, Takahiro Sagawa, Nobuyuki Yoshioka (UTokyo) |
In this work, we provide a unified way to analyze the sample complexity of various quantum error mitigation methods usin... [more] | |
| QIT (2nd) |
2023-05-29 15:30 |
Kyoto | Katsura Campus, Kyoto University | Simultaneous estimation of the positions of two close incoherent optical point sources Masataka Kimizu, Fuyuhiko Tanaka, Akio Fujiwara (Osaka Univ.) |
Recently, the problem of estimating the positions of two optical point sources has been studied with applications to ast... [more] | |
| QIT (2nd) |
2022-12-09 12:30 |
Kanagawa | Keio Univ. (Primary: On-site, Secondary: Online) |
Universal cost bound of quantum error mitigation based on quantum estimation theory Kento Tsubouchi, Takahiro Sagawa, Nobuyuki Yoshioka (UTokyo) |
In this work, we provide a unified way to analyze the cost of various quantum error mitigation methods using the quantum... [more] | |
| QIT (2nd) |
2022-12-09 16:30 |
Kanagawa | Keio Univ. (Primary: On-site, Secondary: Online) |
Error trade-off relation for estimating momentum shift of relativistic spin-1/2 particle Shin Funada, Jun Suzuki (UEC) |
We study the estimation of the momentum shift of a relativistic spin-1/2 particle described by a gaussian wave function ... [more] | |
| QIT (2nd) |
2021-11-30 13:30 |
Online | Online | [Poster Presentation]
Non-monotone metric on the quantum parametric model Jun Suzuki (UEC) |
In this paper, we study a family of quantum Fisher metrics based on a convex mixture of two well-known inner products, w... [more] | |
| QIT (2nd) |
2020-12-10 17:30 |
Online | Online | Quantum anonymous senser which hides positions of magnetic fields Hiroto Kasai (Univ of Tsukuba/AIST), Yuki Takeuchi (NTT), Hideaki Hakoshima, Yuichiro Matsuzaki (AIST), Yasuhiro Tokura (Univ of Tsukuba) |
A lot of attention has been paid to a quantum sensing network for detecting magnetic fields in different positions. Her... [more] |
|
| QIT (2nd) |
2020-12-10 13:00 |
Online | Online | [Poster Presentation]
Quantum Metrology in the Presence of a Background Noise Parameter Ryosuke Mochida, Kazuya Yuasa (Waseda Univ.) |
We discuss the quantum metrology in the presence of noise. While it is usually discussed under the assumption that the n... [more] | |
| IT, SIP, RCS | 2020-01-24 11:10 |
Hiroshima | Hiroshima City Youth Center | Fisher information and quantum gyro sensor
-- Ikehara's interpretation of quantum probability theory -- Osamu Hirota (Tamagawa Univ.)  IT2019-69 SIP2019-82 RCS2019-299 |
In quantum information science, information theory researchers should lead physics researchers in order to execute Wiene... [more] | IT2019-69 SIP2019-82 RCS2019-299 pp.191-196 |
| QIT (2nd) |
2019-11-18 13:50 |
Tokyo | Gakushuin University | [Poster Presentation]
Error trade-off relations for two-parameter unitary model with commuting generators Shin Funada, Jun Suzuki (UEC) |
We investigated whether the trade-off relation between the diagonal elements of the mean square error matrix exist when ... [more] | |
| QIT (2nd) |
2018-11-26 13:30 |
Tokyo | The University of Tokyo | [Poster Presentation]
Uncertainty relation from parameter estimation of the position of an electron in a uniform magnetic field Shin Funada, Jun Suzuki (UEC) |
We derive the uncertainty relation for the position of an electron in a uniform magnetic field by the parameter estimati... [more] | |
| QIT (2nd) |
2018-11-26 13:30 |
Tokyo | The University of Tokyo | [Poster Presentation]
Quantum Metrology in the Presence of Unknown Background Parameters Masaya Shintoku, Teruo Matsubara, Kazuya Yuasa (Waseda Univ.) |
We discuss quantum metrology in the presence of some background. We treat the parameters characterizing the background a... [more] | |
| QIT (2nd) |
2018-06-05 11:20 |
Hiroshima | ICCH Ran | Characterization of classical statistical model for quantum parametric model Jun Suzuki (UEC) |
Several equivalent conditions characterizing classical models are obtained for a parametric family of quantum states. Th... [more] | |
| QIT (2nd) |
2018-06-04 13:20 |
Hiroshima | ICCH Ran | [Poster Presentation]
Quantum interference effects in the estimation of quadrature displacements from photon number resolving measurements Jun-Yi Wu, Toda Norifumi, Holger F. Hofmann (Hiroshima Univ) |
Photon number resolving measurements (PNR) of a x-displaced squeezed state resolve the output photon number probability ... [more] | |
| QIT (2nd) |
2016-11-24 13:00 |
Ibaraki | KEK Kobayashi-hall | [Poster Presentation]
Optimal Gaussian Metrology for Generic Multi-Mode Linear Circuit Teruo Matsubara, Kazuya Yuasa (Waseda Univ.) |
We search for the best input state among generic (mixed in general) Gaussian states with a fixed average number of probe... [more] | |
| QIT (2nd) |
2016-11-24 13:00 |
Ibaraki | KEK Kobayashi-hall | [Poster Presentation]
Complexity of gapped ground states in general k-local Hamiltonians Tomotaka Kuwahara (Tohoku Uni.) |
We discuss the complexity of non-degenerate gapped quantum states. It is well-known that such states have only local pr... [more] |
|
| QIT (2nd) |
2016-05-30 13:00 |
Kochi | Kochi University of Technology Eikokuji campus | [Poster Presentation]
Quantum State Tomography Enhanced by Quantum Multiple Scattering Takahiro Suzuki, Kazuya Yuasa (Waseda Univ.) |
We show that the precision of quantum state tomography can be enhanced by quantum interference effects. We try to recons... [more] | |
| QIT (2nd) |
2016-05-30 13:00 |
Kochi | Kochi University of Technology Eikokuji campus | [Poster Presentation]
Estimation of Parameters in a Qubit Channel via Sequential Measurements Teruo Matsubara, Kazuya Yuasa (Waseda Univ.) |
We discuss the estimation of parameters contained in a quantum channel. In the standard strategy, we send the quantum ... [more] |
|
| QIT (2nd) |
2011-11-21 13:40 |
Osaka | Osaka Univ. Engr. Sci. Sigma Hall (Toyonaka) | Uncertainty Relation between Error and Disturbance Revisited from Quantum Estimation Theory Yu Watanabe, Masahito Ueda (Univ. of Tokyo) |
We formulate error and disturbance in quantum measurement by using quantum estimation theory, and identify trade-off rel... [more] | |
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