Phase-sensitive quantum measurement without controlled operations
Many quantum algorithms rely on the measurement of complex quantum amplitudes.
Standard approaches to obtain the phase information, such as the Hadamard test, give rise …
Standard approaches to obtain the phase information, such as the Hadamard test, give rise …
Matrix product state approximations to quantum states of low energy variance
We show how to efficiently simulate pure quantum states in one dimensional systems that
have both finite energy density and vanishingly small energy fluctuations. We do so by …
have both finite energy density and vanishingly small energy fluctuations. We do so by …
Digital quantum simulation of lattice fermion theories with local encoding
We numerically analyze the feasibility of a platform-neutral, general strategy to perform
quantum simulations of fermionic lattice field theories under open boundary conditions. The …
quantum simulations of fermionic lattice field theories under open boundary conditions. The …
Observation of a finite-energy phase transition in a one-dimensional quantum simulator
One of the most striking many-body phenomena in nature is the sudden change of
macroscopic properties as the temperature or energy reaches a critical value. Such …
macroscopic properties as the temperature or energy reaches a critical value. Such …
Quantum many-body simulation of finite-temperature systems with sampling a series expansion of a quantum imaginary-time evolution
N Matsumoto, S Tsutsui, YO Nakagawa… - arXiv preprint arXiv …, 2024 - arxiv.org
Simulating thermal-equilibrium properties at finite temperature plays a crucial role in
studying the nature of quantum many-body systems. In particular, implementing a finite …
studying the nature of quantum many-body systems. In particular, implementing a finite …
Experimental Demonstration of Break-Even for the Compact Fermionic Encoding
The utility of solving the Fermi-Hubbard model has been estimated in the billions of dollars.
Digital quantum computers can in principle address this task, but have so far been limited to …
Digital quantum computers can in principle address this task, but have so far been limited to …