QuantumPreprint
Free entropy and quantum minimum description length
Gives free entropy an operational meaning through the quantum memory required to describe many copies of a state with a known spectrum and an unknown eigenbasis.
PUBLICATIONS
Papers & preprints.
Research in quantum information, mathematical physics, and gravity, with links to papers and associated talks.
2026
QuantumPreprint
Quantum minimum description of density matrices
Determines the memory cost of compressing density matrices with a known spectrum, using representation theory and matching achievability and converse bounds.
QuantumPreprint
Asymptotically Optimal Mixed-State Cloning
Finds optimal asymptotic fidelities for cloning mixed quantum states, separating the costs of uncertainty in their spectra and eigenbases.
QuantumPreprint
Unbounded Holevo additivity gaps in finite dimensions
Constructs finite-dimensional quantum channels whose two-use Holevo information exceeds twice their single-use value by an arbitrarily large amount.
QuantumPRX Quantum · Accepted
Free mutual information and higher-point out-of-time-ordered correlators
Introduces free mutual information as a measure of quantum chaos and connects it to higher-point OTOCs and the spreading of operators through operator space.
2025
QuantumGravityPreprint
Alpha-bit state merging
Studies state merging with alpha-bits, a communication resource weaker than qubits, and explores implications for entanglement wedge reconstruction.
QuantumGravitySciPost Physics 19, 095
Estimating time in quantum chaotic systems and black holes
Uses quantum Fisher information to ask how precisely time can be read from a chaotic system, yielding a new formulation of the black hole information paradox.
QuantumGravityQuantum 9, 1664
What exactly does Bekenstein bound?
Tests the information-theoretic meaning of the Bekenstein bound through communication capacities, revealing different constraints on bits, qubits, and zero-bits.
2024
QuantumGravityQuantum 8, 1564
Quantum Energy Teleportation versus Information Teleportation
Establishes a trade-off between teleporting energy and quantum information, using both a wormhole-inspired many-body model and a general entanglement bound.
2023
QuantumGravityJournal of High Energy Physics 10 (2023) 040
Beyond islands: A free probabilistic approach
Uses free probability to compute black hole radiation entropy beyond the regimes captured by the island formula, connecting gravitational replicas with random matrices.
2022
QuantumGravityQuantum 6, 655
The refined quantum extremal surface prescription from the asymptotic equipartition property
Derives a refined quantum extremal surface prescription using one-shot entropy and the asymptotic equipartition property, with applications to holography and the Page curve.
QuantumJournal of Mathematical Physics 63, 052203
Revisiting the equality conditions of the data processing inequality for the sandwiched Rényi divergence
Provides a unified treatment of equality in the data processing inequality for sandwiched Rényi divergence, including its connection to Petz recovery.
2021
QuantumGravityPreprint
The black hole information puzzle and the quantum de Finetti theorem
Interprets replica-trick radiation entropy through the quantum de Finetti theorem, relating replica wormholes to correlations and conditional information.
GravityClassical and Quantum Gravity 38, 085004
On the horizon entropy of a causal set
Examines horizon entropy in causal set theory and tests which discrete constructions recover a local horizon area in the continuum limit.
GravityClassical and Quantum Gravity 38, 015010
On the continuum limit of Benincasa-Dowker-Glaser causal set action
Computes the continuum limit of a causal set action on curved causal diamonds and identifies the expected gravitational bulk term together with a boundary contribution.
2020
GravityPhysical Review D 102, 066009
Outer entropy equals Bartnik-Bray inner mass and the gravitational ant conjecture
Connects holographic outer entropy with Bartnik-Bray quasilocal mass, translating geometric monotonicity into entropy laws and motivating a gravitational ant conjecture.
GravityClassical and Quantum Gravity 37, 085004
The small sphere limit of quasilocal energy in higher dimensions along lightcone cuts
Generalizes several quasilocal energy definitions to higher dimensions and compares their small-sphere limits, revealing a departure from the four-dimensional Bel-Robinson description.
2019
GravityPreprint
Local gravitational energy in higher dimensions
Studies the local content of gravitational energy through higher-dimensional quasilocal masses and identifies a common vacuum quantity in their small-sphere limits.
GravityPhysical Review D 100, 064020
Geometry of small causal diamonds
Computes geometric properties of three constructions of small causal diamonds, providing curvature expansions useful in general relativity and quantum gravity.
QuantumPhysical Review Letters 122, 190401
Confidence Polytopes in Quantum State Tomography
Develops efficiently computable confidence regions for quantum state tomography, giving reconstructed states rigorous statistical error bars.
2016
PLOS ONE 11(10), e0163623
Optimizing the Learning Order of Chinese Characters Using a Novel Topological Sort Algorithm
Designs a learning order that balances character frequency with structural prerequisites, using a topological sorting algorithm applicable to broader scheduling tasks.
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