Yaoming Chu
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View article: Overcoming frequency resolution limits using a solid-state spin quantum sensor
Overcoming frequency resolution limits using a solid-state spin quantum sensor Open
The ability to determine precisely the separation of two frequencies is fundamental to spectroscopy, yet the resolution limit poses a critical challenge: distinguishing two incoherent signals becomes impossible when their frequencies are s…
Quantum metrological capability as a probe for quantum phase transition Open
The comprehension of quantum phase transitions (QPTs) is considered as a critical foothold in the field of many-body physics. Developing protocols to effectively identify and understand QPTs thus represents a key but challenging task for p…
Quantum delocalization on correlation landscape: The key to exponentially fast multipartite entanglement generation Open
Entanglement, a hallmark of quantum mechanics, is a vital resource for quantum technologies. Generating highly entangled multipartite states is a key goal in current quantum experiments. We unveil a novel framework for understanding entang…
Non-Hermitian sensing in the absence of exceptional points Open
Open systems possess unique potentials in high-precision sensing, yet the majority of previous studies rely on the spectral singularities known as exceptional points. Here we theoretically propose and experimentally demonstrate universal n…
Experimental demonstration of topological bounds in quantum metrology Open
Quantum metrology is deeply connected to quantum geometry, through the fundamental notion of quantum Fisher information. Inspired by advances in topological matter, it was recently suggested that the Berry curvature and Chern numbers of ba…
View article: Two-photon-transition superadiabatic passage in an nitrogen-vacancy center in diamond
Two-photon-transition superadiabatic passage in an nitrogen-vacancy center in diamond Open
Reaching a given target quantum state with high fidelity and fast operation speed close to the quantum limit represents an important goal in quantum information science. Here, we experimentally demonstrate superadiabatic quantum driving to…
Accelerated quantum control in a three-level system by jumping along the geodesics Open
In a solid-state spin system, we experimentally demonstrate a protocol for quantum-state population transfer with an improved efficiency compared to traditional stimulated Raman adiabatic passage (STIRAP). Using the ground-state triplet of…
Engineering artificial atomic systems of giant electric dipole moment Open
The electric dipole moment (EDM) plays a crucial role in determining the interaction strength of an atom with electric fields, making it paramount to quantum technologies based on coherent atomic control. We propose a scheme for engineerin…
Accelerated quantum control in a three-level system by jumping along the geodesics Open
In a solid-state spin system, we experimentally demonstrate a protocol for quantum-state population transfer with an improved efficiency compared to traditional stimulated Raman adiabatic passage (STIRAP). Using the ground-state triplet of…
Strong quantum metrological limit from many-body physics Open
Surpassing the standard quantum limit and even reaching the Heisenberg limit using quantum entanglement, represents the Holy Grail of quantum metrology. However, quantum entanglement is a valuable resource that does not come without a pric…
Notes on Thermodynamic Principle for Quantum Metrology Open
Recently, we find a physical limit on energy consumption of quantum metrology, and demonstrate that it essentially arises from the erasure of quantum Fisher information (QFI) which determines the best achievable measurement precision. Here…
Experimental demonstration of topological bounds in quantum metrology Open
Quantum metrology is deeply connected to quantum geometry, through the fundamental notion of quantum Fisher information. Inspired by advances in topological matter, it was recently suggested that the Berry curvature and Chern numbers of ba…
Thermodynamic Principle for Quantum Metrology Open
The heat dissipation in quantum metrology represents not only an unavoidable problem towards practical applications of quantum sensing devices but also a fundamental relationship between thermodynamics and quantum metrology. However, a gen…
Simulating superluminal propagation of Dirac particles using trapped ions Open
Simulating quantum phenomena in extreme spacetimes in the laboratory\nrepresents a powerful approach to explore fundamental physics in the interplay\nof quantum field theory and general relativity. Here we propose to simulate the\nmovement…
Experimental estimation of the quantum Fisher information from randomized measurements Open
The quantum Fisher information (QFI) represents a fundamental concept in quantum physics. On the one hand, it quantifies the metrological potential of quantum states in quantum-parameter-estimation measurements. On the other hand, it is in…
Strong angular momentum optomechanical coupling for macroscopic quantum control Open
Optomechanical systems offer unique opportunities to explore macroscopic quantum state and related fundamental problems in quantum mechanics. Here, we propose a quantum optomechanical system involving exchange interaction between spin angu…
Dynamic Framework for Criticality-Enhanced Quantum Sensing Open
Quantum criticality, as a fascinating quantum phenomenon, may provide significant advantages for quantum sensing. Here we propose a dynamic framework for quantum sensing with a family of Hamiltonians that undergo quantum phase transitions …
Precise Spectroscopy of High-Frequency Oscillating Fields with a Single-Qubit Sensor Open
Precise spectroscopy of oscillating fields plays a significant role in many fields. Here, we propose an experimentally feasible scheme to measure the frequency of a fast-oscillating field using a single-qubit sensor. By invoking a stable c…
Proposal for precise spectroscopy of high-frequency oscillating fields with a single qubit sensor Open
Precise spectroscopy of oscillating fields plays significant roles in many fields. Here, we propose an experimentally feasible scheme to measure the frequency of a fast-oscillating field using a single-qubit sensor. By invoking a stable cl…
Quantum Sensing with a Single-Qubit Pseudo-Hermitian System Open
Quantum sensing exploits the fundamental features of a quantum system to achieve highly efficient measurement of physical quantities. Here, we propose a strategy to realize a single-qubit pseudo-Hermitian sensor from a dilated two-qubit He…
Nonadiabatic holonomic quantum computation with all-resonant control Open
The implementation of holonomic quantum computation on superconducting\nquantum circuits is challenging due to the general requirement of controllable\ncomplicated coupling between multilevel systems. Here we solve this problem by\nproposi…