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We apply the quantum error detection scheme Pauli check sandwiching (PCS) to quantum networks by turning it into a distributed multiparty protocol. PCS is a distance 1 code and requires less resource overhead than standard quantum error correction an
Externí odkaz:
http://arxiv.org/abs/2405.15236
To prepare quantum states and extract information, it is often assumed that one can perform a perfectly projective measurement. Such measurements can achieve an uncorrelated system and environment state. However, perfectly projective measurements can
Externí odkaz:
http://arxiv.org/abs/2302.06880
The computational capabilities of near-term quantum computers are limited by the noisy execution of gate operations and a limited number of physical qubits. Hybrid variational algorithms are well-suited to near-term quantum devices because they allow
Externí odkaz:
http://arxiv.org/abs/2210.04378
Quantum state manipulation of two-qubits on the local systems by special unitaries induces special orthogonal rotations on the Bloch spheres. An exact formula is given for determining the local unitaries for some given rotation on the Bloch sphere. T
Externí odkaz:
http://arxiv.org/abs/2205.02989
In open quantum systems, it is known that if the system and environment are in a product state, the evolution of the system is given by a linear completely positive (CP) Hermitian map. CP maps are a subset of general linear Hermitian maps, which also
Externí odkaz:
http://arxiv.org/abs/2105.00085
Publikováno v:
Phys. Rev. A 102, 062415 (2020)
Reversing the effects of a quantum evolution, for example as is done in error correction, is an important task for controlling quantum systems in order to produce reliable quantum devices. When the evolution is governed by a completely positive map,
Externí odkaz:
http://arxiv.org/abs/2007.11083
Autor:
Dilley, Daniel, Chitambar, Eric
Publikováno v:
Phys. Rev. A 97, 062313 (2018)
It is well-known that in certain scenarios weakly entangled states can generate stronger nonlocal effects than their maximally entangled counterparts. In this paper, we consider violations of the CHSH Inequality when one party has inefficient detecto
Externí odkaz:
http://arxiv.org/abs/1803.07747
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Autor:
Dilley, Daniel
Publikováno v:
Dissertations.
It is already known that one can always find a set of measurements on any two-qubit entangled state that will lead to a violation of the CHSH inequality. We provide an explicit state in terms of the angle between Alice's choice of measurements and th