45 citations · 75 across the 5 of their papers we have counts for
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Mitigating Detuning-Induced Systematic Errors in Entanglement-Enhanced Metrology
Shingo Kukita, Yuichiro Matsuzaki
Quantum sensing leverages non-classical resources to enhance precision. In particular, Greenberger-Horne-Zeilinger (GHZ) states can, in principle, attain the Heisenberg limit that…
Geometric Construction of Dynamically Corrected Quantum Gates
Shingo Kukita, Yasushi Kondo
The foundation of quantum technologies lies in the precise control of quantum systems. It is crucial to implement dynamically corrected quantum gates (DCQG), which compensate for i…
Quantum Thermodynamics applied for Quantum Refrigerators cooling down a qubit
Hideaki Okane, Shunsuke Kamimura, Shingo Kukita +2
We discuss a quantum refrigerator to increase the ground state probability of a target qubit whose energy difference between the ground and excited states is less than the thermal…
Heisenberg-limited quantum metrology using collective dephasing
Shingo Kukita, Yuichiro Matsuzaki, Yasushi Kondo
The goal of quantum metrology is the precise estimation of parameters using quantum properties such as entanglement. This estimation usually consists of three steps: state preparat…
Controllable non-Markovianity in phase relaxation
Shingo Kukita, Yasushi Kondo, Mikio Nakahara
Recently remarkable progress in quantum technology has been witnessed. In view of this it is important to investigate an open quantum system as a model of such quantum devices. Qua…
An upper bound on the number of compatible parameters in simultaneous quantum estimation
Shingo Kukita
Simultaneous estimation of multiple parameters is required in many practical applications. A lower bound on the variance of simultaneous estimation is given by the quantum Fisher i…