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
14 papers · 2 filters
Pure Gaussian states from quantum harmonic oscillator chains with a single local dissipative process
Shan Ma, Matthew J. Woolley, Ian R. Petersen +1
We study the preparation of entangled pure Gaussian states via reservoir engineering. In particular, we consider a chain consisting of quantum harmonic oscillators wh…
Multiple-quantum transitions and charge-induced decoherence of donor nuclear spins in silicon
David P. Franke, Moritz P. D. Pflüger, Kohei M. Itoh +1
We study single- and multi-quantum transitions of the nuclear spins of ionized arsenic donors in silicon and find quadrupolar effects on the coherence times, which we link to fluct…
Perfectly capturing traveling single photons of arbitrary temporal wavepackets with a single tunable device
Hendra I. Nurdin, Matthew R. James, Naoki Yamamoto
We derive the explicit analytical form of the time-dependent coupling parameter to an external field for perfect absorption of traveling single photon fields with arbitrary tempora…
Geometric control theory for quantum back-action evasion
Yu Yokotera, Naoki Yamamoto
Engineering a sensor system for detecting an extremely tiny signal such as the gravitational-wave force is a very important subject in quantum physics. A major obstacle to this goa…
A single-atom quantum memory in silicon
S. Freer, S. Simmons, A. Laucht +10
Long coherence times and fast gate operations are desirable but often conflicting requirements for physical qubits. This conflict can be resolved by resorting to fast qubits for op…
Quantum state transfer for multi-input linear quantum systems
Naoki Yamamoto, Hendra I. Nurdin, Matthew R. James
Effective state transfer is one of the most important problems in quantum information processing. Typically, a quantum information device is composed of many subsystems with multi-…
Pure Gaussian quantum states from passive Hamiltonians and an active local dissipative process
Shan Ma, Matthew J. Woolley, Ian R. Petersen +1
We investigate the problem of preparing a pure Gaussian state via reservoir engineering. In particular, we consider a linear quantum system with a passive Hamiltonian and with a si…
Surface Code Error Correction on a Defective Lattice
Shota Nagayama, Austin G. Fowler, Dominic Horsman +2
The yield of physical qubits fabricated in the laboratory is much lower than that of classical transistors in production semiconductor fabrication. Actual implementations of quantu…
Large Stark tuning of donor electron spin quantum bits in germanium
A. J. Sigillito, A. M. Tyryshkin, J. W. Beeman +3
Donor electron spins in semiconductors make exceptional quantum bits because of their long coherence times and compatibility with industrial fabrication techniques. Despite many ad…
State injection, lattice surgery and dense packing of the deformation-based surface code
Shota Nagayama, Takahiko Satoh, Rodney Van Meter
Resource consumption of the conventional surface code is expensive, in part due to the need to separate the defects that create the logical qubit far apart on the physical qubit la…
Local and Distributed Quantum Computation
Rodney Van Meter, Simon J. Devitt
Experimental groups are now fabricating quantum processors powerful enough to execute small instances of quantum algorithms and definitively demonstrate quantum error correction th…
Entropies in General Probabilistic Theories and its Application to Holevo Bound
Gen Kimura, Junji Ishiguro, Makoto Fukui
General probabilistic theories are designed to provide operationally the most general probabilistic models including both classical and quantum theories. In this letter, we introdu…
Cascade and locally dissipative realizations of linear quantum systems for pure Gaussian state covariance assignment
Shan Ma, Matthew J. Woolley, Ian R. Petersen +1
This paper presents two realizations of linear quantum systems for covariance assignment corresponding to pure Gaussian states. The first one is called a cascade realization; given…
Distinguishability of countable quantum states and von Neumann lattice
Ryuitiro Kawakubo, Tatsuhiko Koike
Condition for distinguishability of countably infinite number of pure states by a single measurement is given. Distinguishability is to be understood as possibility of an unambiguo…