53 citations · 323 across the 31 of their papers we have counts for
31 papers
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…
General off-resonance error robust symmetric composite pulses with three elementary operations
Shingo Kukita, Haruki Kiya, Yasushi Kondo
Accurate quantum control is a key technology for realizing quantum information processing, such as quantum communication and quantum computation. In reality, a quantum state under…
Short composite rotation robust against two common systematic errors
Shingo Kukita, Haruki Kiya, Yasushi Kondo
Systematic errors hinder precise quantum control. Pulse length errors (PLEs) and off-resonance errors (OREs) are typical systematic errors that are encountered during one-qubit con…
Polarizing electron spins with a superconducting flux qubit
Shingo Kukita, Hideaki Ookane, Yuichiro Matsuzaki +1
Electron spin resonance (ESR) is a useful tool to investigate properties of materials in magnetic fields where high spin polarization of target electron spins is required in order…
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…