Daniel Dilley
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View article: U-generating system dynamics with a product state using local operations
U-generating system dynamics with a product state using local operations Open
A quantum system may undergo undesired dynamics if it is already correlated with its environment before global unitary evolution takes place. To mitigate these effects, we apply local operations on the system of interest prior to the globa…
View article: QuantEM: The quantum error management compiler
QuantEM: The quantum error management compiler Open
As quantum computing advances toward fault-tolerant architectures, quantum error detection (QED) has emerged as a practical and scalable intermediate strategy in the transition from error mitigation to full error correction. By identifying…
View article: Quantum Resource Correction
Quantum Resource Correction Open
Resource theories play a crucial role in characterizing states and properties essential for quantum information processing. A significant challenge is protecting resources from errors. We explore strategies for correcting quantum resources…
View article: Quantum-classical tradeoffs and multi-controlled quantum gate decompositions in variational algorithms
Quantum-classical tradeoffs and multi-controlled quantum gate decompositions in variational algorithms Open
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…
View article: Detecting Errors in a Quantum Network with Pauli Checks
Detecting Errors in a Quantum Network with Pauli Checks Open
We apply the quantum error detection scheme Pauli check sandwiching (PCS) to quantum networks by turning it into a distributed multiparty protocol. PCS provides protection on the targeted qubits and generally requires less resource overhea…
View article: Some entanglement survives most measurements
Some entanglement survives most measurements Open
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 measu…
View article: Some Entanglement Survives Most Measurements
Some Entanglement Survives Most Measurements Open
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 measu…
View article: Erratum: Sufficient conditions and constraints for reversing general quantum errors [Phys. Rev. A <b>102</b>, 062415 (2020)]
Erratum: Sufficient conditions and constraints for reversing general quantum errors [Phys. Rev. A <b>102</b>, 062415 (2020)] Open
Received 4 May 2022DOI:https://doi.org/10.1103/PhysRevA.105.069901©2022 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasQuantum channelsQuantum error correctionQuantum foundationsQuantum protocolsQuantum InformationP…
View article: Identifying Quantum Correlations Using Explicit SO(3) to SU(2) Maps
Identifying Quantum Correlations Using Explicit SO(3) to SU(2) Maps Open
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 Bloc…
View article: Less entanglement exhibiting more nonlocality with noisy measurements
Less entanglement exhibiting more nonlocality with noisy measurements Open
The Clauser–Horne–Shimony–Holt (CHSH) inequality test is widely used as a mean of invalidating the local deterministic theories. Most attempts to experimentally test nonlocality have presumed unphysical idealizations that do not hold in re…
View article: Guaranteeing completely positive quantum evolution
Guaranteeing completely positive quantum evolution Open
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,…
View article: Sufficient conditions and constraints for reversing general quantum errors
Sufficient conditions and constraints for reversing general quantum errors Open
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 pos…
View article: More nonlocality with less entanglement in Clauser-Horne-Shimony-Holt experiments using inefficient detectors
More nonlocality with less entanglement in Clauser-Horne-Shimony-Holt experiments using inefficient detectors Open
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 ineffici…