Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Serikawa, Takahiro"'
Autor:
Okada, Masanori, Serikawa, Takahiro, Dannatt, James, Kobayashi, Masaya, Sakaguchi, Atsushi, Petersen, Ian, Furusawa, Akira
Publikováno v:
Review of Scientific Instruments 91, 055102 (2020)
This paper considers the application of FPGA-based IIR filtering to increase the usable bandwidth of a piezoelectric transducer used in optical phase locking. We experimentally perform system identification of the interferometer system with the cross
Externí odkaz:
http://arxiv.org/abs/1912.10707
Publikováno v:
Optics Express 27, 18900-18909 (2019)
We report generation and measurement of a squeezed vacuum from a semi-monolithic Fabry-Perot optical parametric oscillator (OPO) up to 100 MHz at 1550 nm. The output coupler of the OPO is a flat surface of a nonlinear crystal with partially reflectin
Externí odkaz:
http://arxiv.org/abs/1904.09777
Autor:
Takase, Kan, Okada, Masanori, Serikawa, Takahiro, Takeda, Shuntaro, Yoshikawa, Jun-ichi, Furusawa, Akira
Publikováno v:
Phys. Rev. A 99, 033832 (2019)
Optical quantum states defined in temporal modes, especially non-Gaussian states like photon-number states, play an important role in quantum computing schemes. In general, the temporal-mode structures of these states are characterized by one or more
Externí odkaz:
http://arxiv.org/abs/1901.04669
Autor:
Serikawa, Takahiro, Furusawa, Akira
Publikováno v:
Phys. Rev. Applied 10, 064016 (2018)
The distributed absorption of photons in photodiodes induces an excess noise in continuous-wave photodetection above the transit-time roll-off frequency. We show that it can be treated as a frequency-dependent excess optical loss in homodyne detectio
Externí odkaz:
http://arxiv.org/abs/1809.04319
Autor:
Serikawa, Takahiro, Yoshikawa, Jun-ichi, Takeda, Shuntaro, Yonezawa, Hidehiro, Ralph, Timothy C., Huntington, Elanor H., Furusawa, Akira
Publikováno v:
Phys. Rev. Lett. 121, 143602 (2018)
We propose a method to subtract a photon from a double sideband mode of continuous-wave light. The central idea is to use phase modulation as a frequency sideband beamsplitter in the heralding photon subtraction scheme, where a small portion of the s
Externí odkaz:
http://arxiv.org/abs/1804.08905
Autor:
Serikawa, Takahiro, Furusawa, Akira
We design and demonstrate a resonant-type differential photodetector for low-noise quantum homodyne measurement at 500MHz optical sideband with 17MHz of bandwidth. By using a microwave monolithic amplifier and a discrete voltage buffer circuit, a low
Externí odkaz:
http://arxiv.org/abs/1803.06462
Autor:
Shiozawa, Yu, Yoshikawa, Jun-ichi, Yokoyama, Shota, Kaji, Toshiyuki, Makino, Kenzo, Serikawa, Takahiro, Nakamura, Ryosuke, Suzuki, Shigenari, Yamazaki, Shota, Asavanant, Warit, Takeda, Shuntaro, van Loock, Peter, Furusawa, Akira
Publikováno v:
Phys. Rev. A 98, 052311 (2018)
We demonstrate an optical quantum nondemolition (QND) interaction gate with a bandwidth of about 100 MHz. Employing this gate, we are able to perform QND measurements in real time on randomly fluctuating signals. Our QND gate relies upon linear optic
Externí odkaz:
http://arxiv.org/abs/1712.08411
Autor:
Yokoyama, Shota, Pozza, Nicola Dalla, Serikawa, Takahiro, Kuntz, Katanya B., Wheatley, Trevor A., Dong, Daoyi, Huntington, Elanor H., Yonezawa, Hidehiro
Publikováno v:
Optics Express 27, 34416 (2019)
Entangled measurement is a crucial tool in quantum technology. We propose a new entanglement measure of multi-mode detection, which estimates the amount of entanglement that can be created in a measurement. To illustrate the proposed measure, we perf
Externí odkaz:
http://arxiv.org/abs/1705.06441
Publikováno v:
Opt Express. 24(25), 28383-28391(2016)
We report a 65MHz-bandwidth triangular-shaped optical parametric oscillator (OPO) for squeezed vacuum generation at 860nm. The triangle structure of our OPO enables the round-trip length to reach 45mm as a ring cavity, which provides a counter circul
Externí odkaz:
http://arxiv.org/abs/1610.04966
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