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View article: Combinatorial optimization enhanced by shallow quantum circuits with 104 superconducting qubits
Combinatorial optimization enhanced by shallow quantum circuits with 104 superconducting qubits Open
A pivotal task for quantum computing is to speed up solving problems that are both classically intractable and practically valuable. Among these, combinatorial optimization problems have attracted tremendous attention due to their broad ap…
View article: Topological prethermal strong zero modes on superconducting processors
Topological prethermal strong zero modes on superconducting processors Open
Symmetry-protected topological phases 1–4 cannot be described by any local order parameter and are beyond the conventional symmetry-breaking model 5 . They are characterized by topological boundary modes that remain stable under symmetry r…
View article: Observation of quantum Darwinism and the origin of classicality with superconducting circuits
Observation of quantum Darwinism and the origin of classicality with superconducting circuits Open
The transition from quantum to classical behavior is a central question in modern physics. How can we rationalize everyday classical observations from an inherently quantum world? Quantum Darwinism offers a compelling framework to explain …
View article: Experimental Detection of Dissipative Quantum Chaos
Experimental Detection of Dissipative Quantum Chaos Open
More than four decades of research on chaos in isolated quantum systems have led to the identification of universal signatures -- such as level repulsion and eigenstate thermalization -- that serve as cornerstones in our understanding of c…
View article: Quantum ensemble learning with a programmable superconducting processor
Quantum ensemble learning with a programmable superconducting processor Open
Quantum machine learning is among the most exciting potential applications of quantum computing. However, the vulnerability of quantum information to environmental noises and the consequent high cost for realizing fault tolerance has imped…
View article: Demonstration of low-overhead quantum error correction codes
Demonstration of low-overhead quantum error correction codes Open
Quantum computers hold the potential to surpass classical computers in solving complex computational problems. However, the fragility of quantum information and the error-prone nature of quantum operations make building large-scale, fault-…
View article: Exploring nontrivial topology at quantum criticality on a superconducting processor
Exploring nontrivial topology at quantum criticality on a superconducting processor Open
The discovery of nontrivial topology in quantum critical states has revised the classification of quantum phase transitions and opened a new direction for exploiting topological phases. However, the experimental investigation of nontrivial…
View article: Probing Many-Body Bell Correlation Depth with Superconducting Qubits
Probing Many-Body Bell Correlation Depth with Superconducting Qubits Open
Quantum nonlocality describes a stronger form of quantum correlation than that of entanglement. It refutes Einstein’s belief of local realism and is among the most distinctive and enigmatic features of quantum mechanics. It is a crucial re…
View article: Observation of Quantum Darwinism and the Origin of Classicality with Superconducting Circuits
Observation of Quantum Darwinism and the Origin of Classicality with Superconducting Circuits Open
The transition from quantum to classical behavior is a central question in modern physics. How can we rationalize everyday classical observations from an inherently quantum world? For instance, what makes two people, each absorbing an inde…
View article: Observation of topological prethermal strong zero modes
Observation of topological prethermal strong zero modes Open
Symmetry-protected topological phases cannot be described by any local order parameter and are beyond the conventional symmetry-breaking paradigm for understanding quantum matter. They are characterized by topological boundary modes that r…
View article: Observation of minimal and maximal speed limits for few and many-body states
Observation of minimal and maximal speed limits for few and many-body states Open
Tracking the time evolution of a quantum state allows one to verify the thermalization rate or the propagation speed of correlations in generic quantum systems. Inspired by the energy-time uncertainty principle, bounds have been demonstrat…
View article: Enhancement of Sensitivity Near Exceptional Points in Dissipative Qubit‐Resonator Systems
Enhancement of Sensitivity Near Exceptional Points in Dissipative Qubit‐Resonator Systems Open
Dissipation usually plays a negative role in quantum metrological technologies, which aim to improve measurement precision by leveraging quantum effects that are vulnerable to environment‐induced decoherence. Recently, it has been demonstr…
View article: Demonstrating quantum error mitigation on logical qubits
Demonstrating quantum error mitigation on logical qubits Open
A long-standing challenge in quantum computing is developing technologies to overcome the inevitable noise in qubits. To enable meaningful applications in the early stages of fault-tolerant quantum computing, devising methods to suppress p…
View article: Observation of topological prethermal strong zero modes
Observation of topological prethermal strong zero modes Open
Symmetry-protected topological phases cannot be described by any local order parameter and are beyond the conventional symmetry-breaking paradigm for understanding quantum matter. They are characterized by topological boundary states robus…
View article: Exploring nontrivial topology at quantum criticality in a superconducting processor
Exploring nontrivial topology at quantum criticality in a superconducting processor Open
The discovery of nontrivial topology in quantum critical states has introduced a new paradigm for classifying quantum phase transitions and challenges the conventional belief that topological phases are typically associated with a bulk ene…
View article: Quantum ensemble learning with a programmable superconducting processor
Quantum ensemble learning with a programmable superconducting processor Open
Quantum machine learning is among the most exciting potential applications of quantum computing. However, the vulnerability of quantum information to environmental noises and the consequent high cost for realizing fault tolerance has imped…
View article: Emergence of steady quantum transport in a superconducting processor
Emergence of steady quantum transport in a superconducting processor Open
Non-equilibrium quantum transport is crucial to technological advances ranging from nanoelectronics to thermal management. In essence, it deals with the coherent transfer of energy and (quasi-)particles through quantum channels between the…
View article: Emergence of steady quantum transport in a superconducting processor
Emergence of steady quantum transport in a superconducting processor Open
Non-equilibrium quantum transport is crucial to technological advances ranging from nanoelectronics to thermal management. In essence, it deals with the coherent transfer of energy and (quasi-)particles through quantum channels between the…
View article: Simulating unsteady flows on a superconducting quantum processor
Simulating unsteady flows on a superconducting quantum processor Open
Recent advancements of quantum technologies have triggered tremendous interest in exploring practical quantum advantage. The simulation of fluid dynamics, a highly challenging problem in classical physics but vital for practical applicatio…
View article: Long-lived topological time-crystalline order on a quantum processor
Long-lived topological time-crystalline order on a quantum processor Open
View article: Creating and controlling global Greenberger-Horne-Zeilinger entanglement on quantum processors
Creating and controlling global Greenberger-Horne-Zeilinger entanglement on quantum processors Open
Greenberger-Horne-Zeilinger (GHZ) states, also known as two-component Schrödinger cats, play vital roles in the foundation of quantum physics and the potential quantum applications. Enlargement in size and coherent control of GHZ states ar…
View article: Quantum continual learning on a programmable superconducting processor
Quantum continual learning on a programmable superconducting processor Open
Quantum computers may outperform classical computers on machine learning tasks. In recent years, a variety of quantum algorithms promising unparalleled potential to enhance, speed up, or innovate machine learning have been proposed. Yet, q…
View article: Quantum highway: Observation of minimal and maximal speed limits for few and many-body states
Quantum highway: Observation of minimal and maximal speed limits for few and many-body states Open
Tracking the time evolution of a quantum state allows one to verify the thermalization rate or the propagation speed of correlations in generic quantum systems. Inspired by the energy-time uncertainty principle, bounds have been demonstrat…
View article: Improved Nonlocality Certification via Bouncing between Bell Operators and Inequalities
Improved Nonlocality Certification via Bouncing between Bell Operators and Inequalities Open
Bell nonlocality is an intrinsic feature of quantum mechanics, which can be certified via the violation of Bell inequalities. It is therefore a fundamental question to certify Bell nonlocality from experimental data. Here, we present an op…
View article: Non-Abelian braiding of Fibonacci anyons with a superconducting processor
Non-Abelian braiding of Fibonacci anyons with a superconducting processor Open
View article: Probing many-body Bell correlation depth with superconducting qubits
Probing many-body Bell correlation depth with superconducting qubits Open
Quantum nonlocality describes a stronger form of quantum correlation than that of entanglement. It refutes Einstein's belief of local realism and is among the most distinctive and enigmatic features of quantum mechanics. It is a crucial re…
View article: Enhanced quantum state transfer by circumventing quantum chaotic behavior
Enhanced quantum state transfer by circumventing quantum chaotic behavior Open
View article: Simulating unsteady fluid flows on a superconducting quantum processor
Simulating unsteady fluid flows on a superconducting quantum processor Open
Recent advancements of intermediate-scale quantum processors have triggered tremendous interest in the exploration of practical quantum advantage. The simulation of fluid dynamics, a highly challenging problem in classical physics but vita…
View article: Creating and controlling global Greenberger-Horne-Zeilinger entanglement on quantum processors
Creating and controlling global Greenberger-Horne-Zeilinger entanglement on quantum processors Open
Greenberger-Horne-Zeilinger (GHZ) states [1], also known as two-component Schr\"{o}dinger cats, play vital roles in the foundation of quantum physics and, more attractively, in future quantum technologies such as fault-tolerant quantum com…
View article: Measuring Spectral Form Factor in Many-Body Chaotic and Localized Phases of Quantum Processors
Measuring Spectral Form Factor in Many-Body Chaotic and Localized Phases of Quantum Processors Open
The spectral form factor (SFF) captures universal spectral fluctuations as signatures of quantum chaos, and has been instrumental in advancing multiple frontiers of physics including the studies of black holes and quantum many-body systems…