Quantum 8, 1416 (2024). https://doi.org/10.22331/q-2024-07-18-1416 Twist defects in surface codes can be used to encode more logical qubits, improve the code rate, and implement logical gates. In this work we provide a rigorous formalism for […]
Tag: quantumjournal
Quantum 8, 1415 (2024). https://doi.org/10.22331/q-2024-07-17-1415 Many fundamental and key objects in quantum mechanics are linear mappings between particular affine/linear spaces. This structure includes basic quantum elements such as states, measurements, channels, instruments, non-signalling channels and […]
Quantum 8, 1414 (2024). https://doi.org/10.22331/q-2024-07-17-1414 We present a general way of quantifying the entropic uncertainty of quantum field configurations in phase space in terms of entropic distinguishability with respect to the vacuum. Our approach is […]
Quantum 8, 1413 (2024). https://doi.org/10.22331/q-2024-07-17-1413 Non-stabilizerness – commonly known as magic – measures the extent to which a quantum state deviates from stabilizer states and is a fundamental resource for achieving universal quantum computation. In […]
Quantum 8, 1412 (2024). https://doi.org/10.22331/q-2024-07-17-1412 Quantum spin liquids and anyons, used to be subjects of condensed matter physics, now are realized in various platforms of qubits, offering unprecedented opportunities to investigate fundamental physics of many-body […]
Quantum 8, 1411 (2024). https://doi.org/10.22331/q-2024-07-15-1411 The quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins, which are encoded in the internal electronic states of the […]
Quantum 8, 1410 (2024). https://doi.org/10.22331/q-2024-07-15-1410 Using near-term quantum computers to achieve a quantum advantage requires efficient strategies to improve the performance of the noisy quantum devices presently available. We develop and experimentally validate two efficient […]
Quantum 8, 1409 (2024). https://doi.org/10.22331/q-2024-07-15-1409 Digital quantum simulation has broad applications in approximating unitary evolution of Hamiltonians. In practice, many simulation tasks for quantum systems focus on quantum states in the low-energy subspace instead of […]
Quantum 8, 1408 (2024). https://doi.org/10.22331/q-2024-07-11-1408 In this work we present a proposal for realising non-Abelian anyons on a NISQ device. In particular we explore the feasibility of implementing the quantum double model $D(D_4)$. We propose […]
Quantum 8, 1407 (2024). https://doi.org/10.22331/q-2024-07-11-1407 Models for open quantum systems, which play important roles in electron transport problems and quantum computing, must take into account the interaction of the quantum system with the surrounding environment. […]
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