A5101830469- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Quantum Mechanics and Applications
- Quantum and electron transport phenomena
- Transition Metal Oxide Nanomaterials
- Physics of Superconductivity and Magnetism
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Thermodynamics and Statistical Mechanics
- Neural Networks and Reservoir Computing
- Mechanical and Optical Resonators
- Gas Sensing Nanomaterials and Sensors
- Quantum many-body systems
- Multimedia Communication and Technology
- Parallel Computing and Optimization Techniques
- Electronic and Structural Properties of Oxides
- Advanced Memory and Neural Computing
- Graphene research and applications
- Ga2O3 and related materials
- Cloud Computing and Resource Management
- 2D Materials and Applications
- Spectroscopy and Quantum Chemical Studies
- Superconducting and THz Device Technology
- Quantum Electrodynamics and Casimir Effect
- Wireless Communication Networks Research
- Telecommunications and Broadcasting Technologies
IBM (United States)
2025
University of Southern California
2018-2024
We utilize a superconducting qubit processor to experimentally probe non-Markovian dynamics of an entangled pair. prepare state between two qubits and monitor the evolution entanglement over time as one interacts with small quantum environment consisting auxiliary transmon coupled its readout cavity. observe collapse revival signature memory effects in environment. then engineer non-Markovianity by populating cavity thermal photons show transition from Markovian dynamics, ultimately reaching...
We present a superconducting circuit device that provides active, on-demand, tunable dissipation on target mode of the electromagnetic field. Our is based “dissipator” can be made lossy when tuned into resonance with broadband filter mode. When driven parametrically, this dissipator induces loss any coupled to it energy detuning equal drive frequency. demonstrate use reset qubit’s readout cavity after measurement, removing photons characteristic rate greater than <a:math...
Non-Markovian noise presents a particularly relevant challenge in understanding and combating decoherence quantum computers, yet is challenging to capture terms of simple models. Here we show that phenomenological dynamical model known as the post-Markovian master equation (PMME) accurately captures predicts non-Markovian superconducting qubit system. The PMME constructed using experimentally measured state dynamics an IBM Quantum Experience cloud-based processor, thus successfully observed...
Interacting many-body quantum systems and their dynamics, while fundamental to modern science technology, are formidable simulate understand. However, by discovering symmetries, conservation laws, integrability, one can unravel intricacies. Here, using up 124 qubits of a fully programmable computer, we uncover local laws integrability in one- two-dimensional periodically-driven spin lattices regime previously inaccessible such detailed analysis. We focus on the paradigmatic example...
We utilize a superconducting qubit processor to experimentally probe the transition from non-Markovian Markovian dynamics of an entangled pair. prepare state between two qubits and monitor evolution entanglement over time as one interacts with small quantum environment consisting auxiliary transmon coupled its readout cavity. observe collapse revival signature memory effects in environment. then engineer non-Markovianity by populating cavity thermal photons show dynamics, reaching regime...
We present an open-source database of superconducting quantum device designs that may be used as the starting point for customized devices. Each design can generated programmatically using Qiskit Metal package, and simulated finite-element electromagnetic solvers. a robust workflow achieving high accuracy on simulations. Many in are experimentally validated, showing excellent agreement between measured parameters. Our includes front-end interface allows users to generate...
We report the epitaxial growth and electrical properties, especially metal-to-insulator transition (MIT), of vanadium dioxide (VO2) thin films synthesized on LSAT (111) ([LaAlO3]0.3[Sr2AlTaO6]0.7) substrates by pulsed laser deposition. X-ray diffraction studies show that relationship between VO2 substrate is given as VO2(020)||LSAT(111) VO2[001]||LSAT[11-2]. observed a sharp four orders magnitude change in longitudinal resistance for around temperature. also measured distinct Raman spectra...
Open quantum systems are a topic of intense theoretical research. The use master equations to model system's evolution subject an interaction with external environment is one the most successful paradigms. General experimental tools study different open system realizations have been limited, and so it highly desirable develop which emulate diverse equation dynamics give way test theories. In this paper we demonstrate systematic method for engineering specific system-environment interactions...
We introduce deterministic benchmarking (DB), a protocol designed to identify the interplay of coherent and incoherent errors overlooked by randomized (RB) related methods. DB provides set four parameters that characterize both in single-qubit gate set. Furthermore, reveals asymmetries performance induced strong relaxation ($T_1$). experimentally demonstrate using superconducting transmon qubit support these results with simple analytical model master equation simulations. Our findings...
Interacting many-body quantum systems and their dynamics, while fundamental to modern science technology, are formidable simulate understand. However, by discovering symmetries, conservation laws, integrability one can unravel intricacies. Here, using up 124 qubits of a fully programmable computer, we uncover local laws in one- two-dimensional periodically-driven spin lattices regime previously inaccessible such detailed analysis. We focus on the paradigmatic example disorder-induced...
We present a superconducting circuit device that provides active, on-demand, tunable dissipation on target mode of the electromagnetic field. Our is based "dissipator" can be made lossy when tuned into resonance with broadband filter mode. When driven parametrically, this dissipator induces loss any coupled to it energy detuning equal drive frequency. demonstrate use reset qubit's readout cavity after measurement, removing photons characteristic rate above $50\ \mu\mathrm{s}^{-1}$. also...
We present an open-source database of superconducting quantum device designs that may be used as the starting point for customized devices. Each design can generated programmatically using Qiskit Metal package, and simulated finite-element electromagnetic solvers. a robust workflow achieving high accuracy on simulations. Many in are experimentally validated, showing excellent agreement between measured parameters. Our includes front-end interface allows users to generate ``best-guess'' based...
Open quantum systems are a topic of intense theoretical research. The use master equations to model system's evolution subject an interaction with external environment is one the most successful paradigms. General experimental tools study different open system realizations have been limited, and so it highly desirable develop which emulate diverse equation dynamics give way test theories. In this paper we demonstrate systematic method for engineering specific system-environment interactions...