A5047039889- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Quantum and electron transport phenomena
- Quantum Mechanics and Applications
- Computability, Logic, AI Algorithms
- Cloud Computing and Resource Management
- Physics of Superconductivity and Magnetism
- Atomic and Subatomic Physics Research
Massachusetts Institute of Technology
2022-2025
As progress is made towards the first generation of error-corrected quantum computers, robust characterization and validation protocols are required to assess noise environments physical processors. While standard coherence metrics such as T1 T2, process tomography, randomized benchmarking now ubiquitous, these techniques provide only partial information about dynamic multi-qubit loss channels responsible for processor errors, which can be described more fully by a Lindblad operator in...
We explore the dynamics of qubit-state purity in presence transverse noise that is anisotropically distributed Bloch-sphere <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi>X</a:mi><a:mi>Y</a:mi></a:mrow></a:math> plane. perform Ramsey experiments with injected along a fixed laboratory-frame axis and observe oscillations at twice qubit frequency arising from intrinsic Larmor precession. probe oscillation dependence on anisotropy, orientation, power spectral density, using...
Quantum programming languages enable developers to implement algorithms for quantum computers that promise computational breakthroughs in classically intractable tasks. Programming requires awareness of entanglement, the phenomenon which measurement outcomes qubits are correlated. Entanglement can determine correctness and suitability patterns. In this work, we formalize purity as a central tool automating reasoning about entanglement programs. A pure expression is one whose evaluation...
The equivalence between the instructions used to define programs and input data on which operate is a basic principle of classical computer architectures programming. Replacing with quantum states enables fundamentally new computational capabilities scaling advantages for many applications, numerous models have been proposed realizing computation. However, within each these models, are transformed by set gates that compiled using solely information. Conventional computing thus break...
Density matrix exponentiation may offer a natively quantum approach to programming computers. A new experiment presents the first demonstration of protocol in superconducting processor.
We explore the dynamics of qubit-state purity in presence transverse noise that is anisotropically distributed Bloch-sphere XY plane. perform Ramsey experiments with injected along a fixed laboratory-frame axis and observe oscillations at twice qubit frequency arising from intrinsic Larmor precession. probe oscillation dependence on anisotropy, orientation, power spectral density, using low-frequency fluxonium qubit. Our results elucidate impact anisotropy decoherence may be useful to...
As progress is made towards the first generation of error-corrected quantum computers, robust characterization and validation protocols are required to assess noise environments physical processors. While standard coherence metrics such as T1 T2, process tomography, randomized benchmarking now ubiquitous, these techniques provide only partial information about dynamic multi-qubit loss channels responsible for processor errors, which can be described more fully by a Lindblad operator in...