45 citations · 140 across the 7 of their papers we have counts for
7 papers
Controlled quantum operations and combs, and their applications to universal controllization of divisible unitary operations
Qingxiuxiong Dong, Shojun Nakayama, Akihito Soeda +1
Unitary operations are a fundamental component of quantum algorithms, but they seem to be far more useful if given with a "quantum control" as a controlled unitary operation. Howev…
Robust quantum sensing with strongly interacting probe systems
Shane Dooley, Michael Hanks, Shojun Nakayama +2
In the field of quantum metrology and sensing, a collection of quantum systems (e.g. spins) are used as a probe to estimate some physical parameter (e.g. magnetic field). It is usu…
Quantum metrology beyond the classical limit under the effect of dephasing
Yuichiro Matsuzaki, Simon Benjamin, Shojun Nakayama +2
Quantum sensors have the potential to outperform their classical counterparts. For classical sensing, the uncertainty of the estimation of the target fields scales inversely with t…
Projective measurement of energy on an ensemble of qubits with unknown frequencies
Yuichiro Matsuzaki, Shojun Nakayama, Akihito Soeda +2
In projective measurements of energy, a target system is projected to an eigenstate of the system Hamiltonian, and the measurement outcomes provide the information of corresponding…
Parallelizable adiabatic gate teleportation
Kosuke Nakago, Michal Hajdušek, Shojun Nakayama +1
We introduce a twisted Heisenberg-type interaction Hamiltonian, a Heisenberg-type spin interaction where the coordinates of the second qubit are twisted according to a unitary gate…
Quantum algorithm for universal implementation of projective measurement of energy
Shojun Nakayama, Akihito Soeda, Mio Murao
A projective measurement of energy (PME) on a quantum system is a quantum measurement, determined by the Hamiltonian of the system. PME protocols exist when the Hamiltonian is give…
Exchange Fluctuation Theorem for correlated quantum systems
Sania Jevtic, David Jennings, Terry Rudolph +3
We extend the Exchange Fluctuation Theorem for energy exchange between thermal quantum systems beyond the assumption of molecular chaos, and describe the non-equilibrium exchange d…