Zobrazeno 1 - 10
of 997
pro vyhledávání: '"Doherty, P C"'
A macroscopic energy barrier is a necessary condition for self-correcting quantum memory. In this paper, we prove tight bounds on the energy barrier applicable to any quantum code obtained from the hypergraph product of two classical codes. If the un
Externí odkaz:
http://arxiv.org/abs/2407.20526
Characterising the performance of noisy quantum circuits is central to the production of prototype quantum computers and can enable improved quantum error correction that exploits noise biases identified in a quantum device. We describe an implementa
Externí odkaz:
http://arxiv.org/abs/2404.06545
The Gottesman-Kitaev-Preskill (GKP) code is an exciting route to fault-tolerant quantum computing since Gaussian resources and GKP Pauli-eigenstate preparation are sufficient to achieve universal quantum computing. In this work, we provide a practica
Externí odkaz:
http://arxiv.org/abs/2403.02396
Rotation symmetric bosonic codes are an attractive encoding for qubits into oscillator degrees of freedom, particularly in superconducting qubit experiments. While these codes can tolerate considerable loss and dephasing, they will need to be combine
Externí odkaz:
http://arxiv.org/abs/2312.14390
We describe a protocol for the universal control of non-ideal $\pi$-periodic superconducting qubits. Our proposal relies on a $\pi$-SQUID: a superconducting loop formed by two $\pi$-periodic circuit elements, with an external magnetic flux threading
Externí odkaz:
http://arxiv.org/abs/2312.04321
Publikováno v:
Phys. Rev. B 109, 205125 (2024)
Haah's cubic code is the prototypical type-II fracton topological order. It instantiates the no string-like operator property that underlies the favorable scaling of its code distance and logical energy barrier. Previously, the cubic code was only ex
Externí odkaz:
http://arxiv.org/abs/2308.00138
Autor:
Long, David M., Doherty, Andrew C.
Publikováno v:
Phys. Rev. B 109, 075140 (2024)
The algebraic tools used to study topological phases of matter are not clearly suited to studying processes in which the bulk energy gap closes, such as phase transitions. We describe an elementary two edge thought experiment which reveals the effect
Externí odkaz:
http://arxiv.org/abs/2307.12509
Publikováno v:
Phys. Rev. Lett. 132, 130605 (2024)
The Gottesman-Kitaev-Preskill (GKP) code may be used to overcome noise in continuous variable quantum systems. However, preparing GKP states remains experimentally challenging. We propose a method for preparing GKP states by engineering a time-period
Externí odkaz:
http://arxiv.org/abs/2303.03541
Publikováno v:
PRX Quantum 5, 010331 (2024)
The Gottesman-Kitaev-Preskill (GKP) error correcting code encodes a finite dimensional logical space in one or more bosonic modes, and has recently been demonstrated in trapped ions and superconducting microwave cavities. In this work we introduce a
Externí odkaz:
http://arxiv.org/abs/2210.14919