975 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP429 papers
- Kyoto UniversityJP151 papers
- RIKENJP142 papers
- Tokyo Institute of TechnologyJP134 papers
- High Energy Accelerator Research OrganizationJP100 papers
- Tohoku UniversityJP100 papers
- Nagoya UniversityJP97 papers
- The University of OsakaJP96 papers
- Tokyo University of ScienceJP90 papers
- Japan Science and Technology AgencyJP68 papers
- UNSW SydneyAU63 papers
- Centre National de la Recherche ScientifiqueFR62 papers
11 papers · 2 filters
Disturbance by optimal discrimination
Ryuitiro Kawakubo, Tatsuhiko Koike
We discuss the disturbance by measurements which unambiguously discriminate between given candidate states. We prove that such an optimal measurement necessarily changes distinguis…
Uncertainty relations in implementation of unitary operations
Hiroyasu Tajima, Naoto Shiraishi, Keiji Saito
The underlying mechanism in the implementation of unitary operation on a system with an external apparatus is studied. We implement the unitary time evolution in the system as a ph…
Integrated silicon qubit platform with single-spin addressability, exchange control and robust single-shot singlet-triplet readout
M. A. Fogarty, K. W. Chan, B. Hensen +10
Silicon quantum dot spin qubits provide a promising platform for large-scale quantum computation because of their compatibility with conventional CMOS manufacturing and the long co…
Vector magnetic field sensing via multi-frequency control of nitrogen-vacancy centers in diamond
Sayaka Kitazawa, Yuichiro Matsuzaki, Saijo Soya +3
An ensemble of nitrogen-vacancy (NV) centers in diamond is an attractive device to detect small magnetic fields. In particular, by exploiting the fact that the NV center can be ali…
High resolution quantum sensing with shaped control pulses
J. Zopes, K. Sasaki, K. S. Cujia +5
We investigate the application of amplitude-shaped control pulses for enhancing the time and frequency resolution of multipulse quantum sensing sequences. Using the electronic spin…
State protection by quantum control before and after noise
Hiroaki Wakamura, Ryûitirô Kawakubo, Tatsuhiko Koike
We discuss the possibility of protecting the state of a quantum system that goes through noise by measurements and operations before and after the noise process. We extend our prev…
Optimal control for perfect state transfer in linear quantum memory
Hideaki Nakao, Naoki Yamamoto
A quantum memory is a system that enables transfer, storage, and retrieval of optical quantum states by ON/OFF switching of the control signal in each stages of the memory. In part…
Noise suppression by quantum control before and after the noise
Hiroaki Wakamura, Ryûitirô Kawakubo, Tatsuhiko Koike
We discuss the possibility of protecting the state of a quantum system that goes through noise, by measurements/operations before and after the noise process. The aim is to seek fo…
Coherent Rabi dynamics of a superradiant spin ensemble in a microwave cavity
B. C. Rose, A. M. Tyryshkin, H. Riemann +6
We achieve the strong coupling regime between an ensemble of phosphorus donor spins in a highly enriched Si crystal and a 3D dielectric resonator. Spins were polarized beyon…
Resource-aware System Architecture Model for Implementation of Quantum aided Byzantine Agreement on Quantum Repeater Networks
M. Amin Taherkhani, Keivan Navi, Rodney Van Meter
Quantum aided Byzantine agreement (QBA) is an important distributed quantum algorithm with unique features in comparison to classical deterministic and randomized algorithms, requi…
The Network Impact of Hijacking a Quantum Repeater
Takahiko Satoh, Shota Nagayama, Rodney Van Meter
In quantum networking, repeater hijacking menaces the security and utility of quantum applications. To deal with this problem, it is important to take a measure of the impact of qu…