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Interactive Protocols for Classically-Verifiable Quantum Advantage
Daiwei Zhu, Gregory D. Kahanamoku-Meyer, Laura Lewis +15
Achieving quantum computational advantage requires solving a classically intractable problem on a quantum device. Natural proposals rely upon the intrinsic hardness of classically…
Noise Electrometry of Polar and Dielectric Materials
Rahul Sahay, Pavel A. Volkov, Satcher Hsieh +5
A qubit sensor with an electric dipole moment acquires an additional contribution to its depolarization rate when it is placed in the vicinity of a polar or dielectric material as…
Absolutely stable time crystals at finite temperature
Francisco Machado, Quntao Zhuang, Norman Y. Yao +1
We show that locally-interacting, periodically-driven (Floquet) Hamiltonian dynamics coupled to a Langevin bath support finite-temperature discrete time crystals (DTC) with an infi…
Reply to Comment on "Discrete Time Crystals: Rigidity Criticality and Realizations"
Norman Y. Yao, Andrew C. Potter, Ionut-Dragos Potirniche +1
This is a reply to the comment from Khemani, Moessner and Sondhi (KMS) [arXiv:2109.00551] on our manuscript [Phys. Rev. Lett. 118, 030401 (2017)]. The main new claim in KMS is that…
Observation of a many-body-localized discrete time crystal with a programmable spin-based quantum simulator
J. Randall, C. E. Bradley, F. V. van der Gronden +7
The discrete time crystal (DTC) is a recently discovered phase of matter that spontaneously breaks time-translation symmetry. Disorder-induced many-body-localization is required to…
Quantum gas microscopy of Kardar-Parisi-Zhang superdiffusion
David Wei, Antonio Rubio-Abadal, Bingtian Ye +9
The Kardar-Parisi-Zhang (KPZ) universality class describes the coarse-grained behavior of a wealth of classical stochastic models. Surprisingly, it was recently conjectured to also…
Characterizing two-dimensional superconductivity via nanoscale noise magnetometry with single-spin qubits
Pavel E. Dolgirev, Shubhayu Chatterjee, Ilya Esterlis +4
We propose nanoscale magnetometry via isolated single-spin qubits as a probe of superconductivity in two-dimensional materials. We characterize the magnetic field noise at the qubi…
Single-spin qubit magnetic spectroscopy of two dimensional superconductivity
Shubhayu Chatterjee, Pavel E. Dolgirev, Ilya Esterlis +4
A single-spin qubit placed near the surface of a conductor acquires an additional contribution to its relaxation rate due to magnetic noise created by electric current fluc…
Floquet Engineering Ultracold Polar Molecules to Simulate Topological Insulators
Thomas Schuster, Felix Flicker, Ming Li +4
We present a quantitative, near-term experimental blueprint for the quantum simulation of topological insulators using lattice-trapped ultracold polar molecules. In particular, we…
The Measurement-induced Transition in Long-range Interacting Quantum Circuits
Maxwell Block, Yimu Bao, Soonwon Choi +2
The competition between scrambling unitary evolution and projective measurements leads to a phase transition in the dynamics of quantum entanglement. Here, we demonstrate that the…
Emergent hydrodynamics in a strongly interacting dipolar spin ensemble
Chong Zu, Francisco Machado, Bingtian Ye +12
Conventional wisdom holds that macroscopic classical phenomena naturally emerge from microscopic quantum laws. However, despite this mantra, building direct connections between the…
Floquet Phases of Matter via Classical Prethermalization
Bingtian Ye, Francisco Machado, Norman Y. Yao
We demonstrate that the prethermal regime of periodically driven (Floquet), classical many-body systems can host nonequilibrium phases of matter. In particular, we show that there…
Classically-Verifiable Quantum Advantage from a Computational Bell Test
Gregory D. Kahanamoku-Meyer, Soonwon Choi, Umesh V. Vazirani +1
We propose and analyze a novel interactive protocol for demonstrating quantum computational advantage, which is efficiently classically verifiable. Our protocol relies upon the cry…
Probing many-body dynamics in a two dimensional dipolar spin ensemble
Emily J. Davis, Bingtian Ye, Francisco Machado +13
The most direct approach for characterizing the quantum dynamics of a strongly-interacting system is to measure the time-evolution of its full many-body state. Despite the conceptu…
Observation of a prethermal discrete time crystal
Antonis Kyprianidis, Francisco Machado, William Morong +9
The conventional framework for defining and understanding phases of matter requires thermodynamic equilibrium. Extensions to non-equilibrium systems have led to surprising insights…
Many-body quantum teleportation via operator spreading in the traversable wormhole protocol
Thomas Schuster, Bryce Kobrin, Ping Gao +7
By leveraging shared entanglement between a pair of qubits, one can teleport a quantum state from one particle to another. Recent advances have uncovered an intrinsically many-body…