1.8k citations · 2.1k across the 23 of their papers we have counts for
25 papers
Function-like pseudorandom unitaries generate pseudorandom quantum processes
Zitai Xu, Rahul Arvind, Kishor Bharti +5
Haar-random unitaries provide a canonical model of generic random quantum evolution, but they typically have exponential description and circuit complexity. Although pseudorandom u…
Emergent universality in Kraus maps of quantum chaotic many-body dynamics
Qi Camm Huang, Wai-Keong Mok, Tobias Haug +1
Recent studies of "deep thermalization" have revealed universal physics in quantum many-body dynamics beyond equilibration towards Gibbs states: maximally random quantum state ense…
Universal equilibrium magic in quantum many-body systems
Soumyadeep Sarma, Tobias Haug, John Preskill +1
Thermalization conventionally describes local properties of isolated many-body systems at equilibrium. Magic, or nonstabilizerness $\unicode{x2013}$ the resource enabling universal…
Entanglement governs early-time growth of randomness in projected ensembles
Thuwaragesh Jayachandran, Wai-Keong Mok
Deep thermalization concerns the emergence of universal pure-state statistics in projected ensembles at late times, yet the mechanism governing the initial growth of randomness rem…
Nature is stingy: Universality of Scrooge ensembles in quantum many-body systems
Wai-Keong Mok, Tobias Haug, Wen Wei Ho +1
Recent advances in quantum simulators allow direct experimental access to ensembles of pure states generated by measuring part of an isolated quantum many-body system. These projec…
Quantization of nonlinear non-Hamiltonian systems
Andy Chia, Wai-Keong Mok, Leong-Chuan Kwek +1
Several important dynamical systems are in , defined by the pair of differential equations . A question of fundamental importance is how such…
Pseudorandom density matrices
Nikhil Bansal, Wai-Keong Mok, Kishor Bharti +2
Pseudorandom states (PRSs) are state ensembles that cannot be efficiently distinguished from Haar random states. However, the definition of PRSs has been limited to pure states and…
Ground-state selection via many-body superradiant decay
Wai-Keong Mok, Stuart J. Masson, Dan M. Stamper-Kurn +2
For a single particle, relaxation into different ground states is governed by fixed branching ratios determined by the transition matrix element and the environment. Here, we show…
Universal scaling laws for correlated decay of many-body quantum systems
Wai-Keong Mok, Avishi Poddar, Eric Sierra +3
Quantum systems are open, continually exchanging energy and information with the surrounding environment. This interaction leads to decoherence and decay of quantum states. In comp…
Stability of macroscopic spin ensembles against inhomogeneous dephasing
Wai-Keong Mok, Leong-Chuan Kwek, Steven Touzard
Spin ensembles play a pivotal role in various quantum applications such as metrology and simulating many-body physics. Recent research has proposed utilizing spin cat states to enc…
Generation and optimization of entanglement between atoms chirally coupled to spin cavities
Jia-Bin You, Jian Feng Kong, Davit Aghamalyan +5
We explore the generation and optimization of entanglement between atoms chirally coupled to finite 1D spin chains, functioning as {\it spin cavities}. By diagonalizing the spin ca…
Exponentially faster preparation of quantum dimers via driven-dissipative stabilization
Kian Hwee Lim, Wai-Keong Mok, Jia-Bin You +2
We propose a novel rapid, high-fidelity, and noise-resistant scheme to generate many-body entanglement between multiple qubits stabilized by dissipation into a 1D bath. Using a car…
Rigorous noise reduction with quantum autoencoders
Wai-Keong Mok, Hui Zhang, Tobias Haug +6
Reducing noise in quantum systems is a major challenge towards the application of quantum technologies. Here, we propose and demonstrate a scheme to reduce noise using a quantum au…
Efficient option pricing with unary-based photonic computing chip and generative adversarial learning
Hui Zhang, Lingxiao Wan, Sergi Ramos-Calderer +9
In the modern financial industry system, the structure of products has become more and more complex, and the bottleneck constraint of classical computing power has already restrict…
Quantum synchronization effects induced by strong nonlinearities
Yuan Shen, Wai-Keong Mok, Changsuk Noh +4
A paradigm for quantum synchronization is the quantum analog of the Stuart--Landau oscillator, which corresponds to a van der Pol oscillator in the limit of weak (i.e. vanishingly…
Dicke superradiance requires interactions beyond nearest-neighbors
Wai-Keong Mok, Ana Asenjo-Garcia, Tze Chien Sum +1
Photon-mediated interactions within an excited ensemble of emitters can result in Dicke superradiance, where the emission rate is greatly enhanced, manifesting as a high-intensity…
Oscillating bound states in non-Markovian photonic lattices
Kian Hwee Lim, Wai-Keong Mok, Leong-Chuan Kwek
It is known that the superposition of two bound states in the continuum (BIC) leads to the phenomenon of an oscillating bound state, where excitations mediated by the continuum mod…
Quantum pure noise-induced transitions: A truly nonclassical limit cycle sensitive to number parity
A. Chia, W. -K. Mok, C. Noh +1
It is universally accepted that noise may bring order to complex nonequilibrium systems. Most strikingly, entirely new states not seen in the noiseless system can be induced purely…
Noisy intermediate-scale quantum (NISQ) algorithms
Kishor Bharti, Alba Cervera-Lierta, Thi Ha Kyaw +11
A universal fault-tolerant quantum computer that can solve efficiently problems such as integer factorization and unstructured database search requires millions of qubits with low…
Optimal Probes for Global Quantum Thermometry
Wai-Keong Mok, Kishor Bharti, Leong-Chuan Kwek +1
Quantum thermodynamics has emerged as a separate sub-discipline, revising the concepts and laws of thermodynamics, at the quantum scale. In particular, there has been a disruptive…
Classifying global state preparation via deep reinforcement learning
Tobias Haug, Wai-Keong Mok, Jia-Bin You +3
Quantum information processing often requires the preparation of arbitrary quantum states, such as all the states on the Bloch sphere for two-level systems. While numerical optimiz…
Noise, not squeezing, boosts synchronization in the deep quantum regime
Wai Keong Mok, Leong Chuan Kwek, Hermanni Heimonen
Synchronization occurs ubiquitously in nature. The van der Pol oscillator has been a favorite model to investigate synchronization. Here we study the oscillator in the deep quantum…
Microtoroidal resonators enhance long-distance dynamical entanglement generation in chiral quantum networks
Wai-Keong Mok, Davit Aghamalyan, Jia-Bin You +1
Chiral quantum networks provide a promising route for realising quantum information processing and quantum communication. Here, we describe how two distant quantum nodes of chiral…
Long-distance dissipation-assisted transport of entangled states via a chiral waveguide
Wai-Keong Mok, Davit Aghamalyan, Jia-Bin You +4
Quantum networks provide a prominent platform for realizing quantum information processing and quantum communication, with entanglement being a key resource in such applications. H…