8 papers
Quantum Partial Information Decompositions, an Operational Order on Ensembles, and Direct Quantifications of Objective Information
Alexander Nico-Katz
The partial information decomposition (PID) framework is an extension of classical information theory that enables a systematic analysis of the structure of information in multipar…
Observation of magnetic quantum phase crossovers in a semiconductor spin ladder
Elizaveta Morozova, Xin Zhang, Utso Bhattacharya +9
Understanding collective phases of strongly correlated quantum magnets relies on theoretically tractable model systems with precise microscopic control. Antiferromagnetic spin ladd…
A Zero Added Loss Multiplexing (ZALM) Source Simulation
Jerry Horgan, Alexander Nico-Katz, Shelbi L. Jenkins +6
Zero Added Loss Multiplexing (ZALM) offers broadband, per channel heralded EPR pairs, with a rich parameter space that allows its performance to be tailored for specific applicatio…
Entanglement Purification With Finite Latency Classical Communication in Quantum Networks
Vivek Vasan, Alexander Nico-Katz, Boulat A. Bash +2
Quantum networks rely on high fidelity entangled pairs distributed to nodes, but maintaining their fidelity is challenged by environmental decoherence during storage. Entanglement…
A Random Matrix Theory of Pauli Tomography
Nathan Keenan, John Goold, Alex Nico-Katz
Quantum state tomography (QST), the process of reconstructing some unknown quantum state from repeated measurements on copies of said state, is a foundationally important t…
Control Protocol for Entangled Pair Verification in Quantum Optical Networks
Vivek Vasan, Anuj Agrawal, Alexander Nico-Katz +4
We consider quantum networks, where entangled photon pairs are distributed using fibre optic links from a centralized source to entangling nodes. The entanglement is then stored (v…
Anomalous transport in U(1)-symmetric quantum circuits
Alessandro Summer, Alex Nico-Katz, Shane Dooley +1
In this work we investigate discrete-time transport in a generic U(1)-symmetric disordered model tuned across an array of different dynamical regimes. We develop an aggregate quant…
Can Quantum Computers Do Nothing?
Alexander Nico-Katz, Nathan Keenan, John Goold
Quantum computing platforms are subject to contradictory engineering requirements: qubits must be protected from mutual interactions when idling ('doing nothing'), and strongly int…