# 234 papers in Volume 5 (2021)

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# 234 papers in Volume 5 (2021)

## Symmetry-protected sign problem and magic in quantum phases of matter

## Lieb’s Theorem and Maximum Entropy Condensates

## The Efficient Preparation of Normal Distributions in Quantum Registers

## Squeezing-enhanced communication without a phase reference

## A Fault-Tolerant Honeycomb Memory

## Can you sign a quantum state?

## Security of quantum key distribution with intensity correlations

## Theory and experiment for resource-efficient joint weak-measurement

## Error mitigation with Clifford quantum-circuit data

## Tunable zero modes and quantum interferences in flat-band topological insulators

## Entanglement marginal problems

## Two new results about quantum exact learning

## Encoding-dependent generalization bounds for parametrized quantum circuits

## Randomized Benchmarking as Convolution: Fourier Analysis of Gate Dependent Errors

## Clifford Circuit Optimization with Templates and Symbolic Pauli Gates

## Emergent Replica Conformal Symmetry in Non-Hermitian SYK$_2$ Chains

## Efficient verification of Boson Sampling

## Multiport based teleportation – transmission of a large amount of quantum information

## High-precision quantum algorithms for partial differential equations

## Encoding strongly-correlated many-boson wavefunctions on a photonic quantum computer: application to the attractive Bose-Hubbard model

## Quantum repeaters based on individual electron spins and nuclear-spin-ensemble memories in quantum dots

## Quantum Advantage for Shared Randomness Generation

## The Fermionic Quantum Emulator

## Simultaneous Perturbation Stochastic Approximation of the Quantum Fisher Information

## Multidimensional cluster states using a single spin-photon interface coupled strongly to an intrinsic nuclear register

## Quantum-classical correspondence of a system of interacting bosons in a triple-well potential

## Entangled symmetric states and copositive matrices

## Qulacs: a fast and versatile quantum circuit simulator for research purpose

## Effect of barren plateaus on gradient-free optimization

## Gate Set Tomography

## Hilbert curve vs Hilbert space: exploiting fractal 2D covering to increase tensor network efficiency

## Symmetry Protected Quantum Computation

## Determining quantum phase diagrams of topological Kitaev-inspired models on NISQ quantum hardware

## Robust self-testing of steerable quantum assemblages and its applications on device-independent quantum certification

## Noise-robust preparation contextuality shared between any number of observers via unsharp measurements

## Quantum-accelerated constraint programming

## Exact holographic tensor networks for the Motzkin spin chain

## Kelly Betting with Quantum Payoff: a continuous variable approach

## Computable Rényi mutual information: Area laws and correlations

## Simple and maximally robust processes with no classical common-cause or direct-cause explanation

## Quantum routing with fast reversals

## Reachability Deficits in Quantum Approximate Optimization of Graph Problems

## Quantum reference frame transformations as symmetries and the paradox of the third particle

## Quadrature protection of squeezed states in a one-dimensional photonic topological insulator

## Generalized probability rules from a timeless formulation of Wigner’s friend scenarios

## Borromean states in discrete-time quantum walks

## Optimal local unitary encoding circuits for the surface code

## Self-referenced hologram of a single photon beam

## An efficient quantum algorithm for the time evolution of parameterized circuits

## Resource-Optimized Fermionic Local-Hamiltonian Simulation on a Quantum Computer for Quantum Chemistry

## Nonclassical trajectories in head-on collisions

## Energy storage and coherence in closed and open quantum batteries

## Routed quantum circuits

## Quantum Algorithms for Solving Ordinary Differential Equations via Classical Integration Methods

## Self-organized topological insulator due to cavity-mediated correlated tunneling

## Single-copy activation of Bell nonlocality via broadcasting of quantum states

## Quantum erasing the memory of Wigner’s friend

## Real-time ghost imaging of Bell-nonlocal entanglement between a photon and a quantum memory

## Algorithmic Error Mitigation Scheme for Current Quantum Processors

## Adiabatic critical quantum metrology cannot reach the Heisenberg limit even when shortcuts to adiabaticity are applied

## Programmability of covariant quantum channels

## Crosstalk Suppression for Fault-tolerant Quantum Error Correction with Trapped Ions

## Probing the edge between integrability and quantum chaos in interacting few-atom systems

## The shape of higher-dimensional state space: Bloch-ball analog for a qutrit

## Characterising and bounding the set of quantum behaviours in contextuality scenarios

## Classical and quantum speed limits

## Quantum-accelerated multilevel Monte Carlo methods for stochastic differential equations in mathematical finance

## Hierarchy of quantum operations in manipulating coherence and entanglement

## Experimental localisation of quantum entanglement through monitored classical mediator

## Optimal Multi-port-based Teleportation Schemes

## Quantum marginal problem and incompatibility

## Quantum Physical Unclonable Functions: Possibilities and Impossibilities

## Visualizing the emission of a single photon with frequency and time resolved spectroscopy

## Certifying dimension of quantum systems by sequential projective measurements

## Witnessing Wigner Negativity

## The group structure of dynamical transformations between quantum reference frames

## Efficient qubit phase estimation using adaptive measurements

## Quantum advantage from energy measurements of many-body quantum systems

## Modeling and mitigation of cross-talk effects in readout noise with applications to the Quantum Approximate Optimization Algorithm

## A Threshold for Quantum Advantage in Derivative Pricing

## Spectrally multimode integrated SU(1,1) interferometer

## Versatile Super-Sensitive Metrology Using Induced Coherence

## Contextual Subspace Variational Quantum Eigensolver

## Qubit-efficient encoding schemes for binary optimisation problems

## Quantum Chaos is Quantum

## Error mitigation on a near-term quantum photonic device

## Photonic quantum data locking

## Reconstructing quantum theory from diagrammatic postulates

## Device-independent quantum key distribution from generalized CHSH inequalities

## Consequences of preserving reversibility in quantum superchannels

## Resource theories of multi-time processes: A window into quantum non-Markovianity

## Combining hard and soft decoders for hypergraph product codes

## Experimentally friendly approach towards nonlocal correlations in multisetting N-partite Bell scenarios

## Towards Quantum One-Time Memories from Stateless Hardware

## Grover Adaptive Search for Constrained Polynomial Binary Optimization

## Quantum algorithms for Second-Order Cone Programming and Support Vector Machines

## Multiple-shot and unambiguous discrimination of von Neumann measurements

## Dimensional Expressivity Analysis of Parametric Quantum Circuits

## There and back again: A circuit extraction tale

## Postquantum common-cause channels: the resource theory of local operations and shared entanglement

## On the Quantum versus Classical Learnability of Discrete Distributions

## Entangled resource for interfacing single- and dual-rail optical qubits

## Application-Motivated, Holistic Benchmarking of a Full Quantum Computing Stack

## Estimating expectation values using approximate quantum states

## The geometry of passivity for quantum systems and a novel elementary derivation of the Gibbs state

## Second law of thermodynamics for batteries with vacuum state

## Optimal allocation of quantum resources

## Quantum one-time tables for unconditionally secure qubit-commitment

## Self-testing with finite statistics enabling the certification of a quantum network link

## Stabilizer extent is not multiplicative

## Non-Pauli topological stabilizer codes from twisted quantum doubles

## Cost-optimal single-qubit gate synthesis in the Clifford hierarchy

## A resource efficient approach for quantum and classical simulations of gauge theories in particle physics

## Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer

## Structure optimization for parameterized quantum circuits

## Efficient quantum measurement of Pauli operators in the presence of finite sampling error

## How Dynamical Quantum Memories Forget

## Experiment-friendly formulation of quantum backflow

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