Floquet Prethermalization with Lifetime Exceeding 90 s in a Bulk Hyperpolarized Solid

Beatrez, William; Janes, Otto; Akkiraju, Amala; Pillai, Arjun; Oddo, Alexander; Reshetikhin, Paul; Druga, Emanuel; McAllister, Maxwell; Elo, Mark; Gilbert, Benjamin; Suter, Dieter; Ajoy, Ashok

doi:10.1103/physrevlett.127.170603

Cited by 29 publications

(28 citation statements)

References 52 publications

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“…After an exponentially long time ∼ e cω with c a constant, these systems melt into a featureless state akin to infinite temperature. Requiring only a high frequency drive, prethermalization is ideal for the investigation of non-equilibrium many-body physics in experiments [46][47][48] -indeed prethermal DTCs have just been realized [49].…”

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confidence: 99%

Prethermal nematic order and staircase heating in a driven frustrated Ising magnet with dipolar interactions

Jin¹,

Pizzi²,

Knolle³

2022

Preprint

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Many-body systems subject to a high-frequency drive can show intriguing thermalization behavior. Prior to heating to a featureless infinite-temperature state, these systems can spend an exponentially long time in prethermal phases characterized by various kinds of order. Here, we uncover the rich non-equilibrium phase diagram of a driven frustrated two-dimensional Ising magnet with competing short-range ferromagnetic and long-range dipolar interactions. We show that the ordered stripe and nematic phases, which appear in equilibrium as a function of temperature, underpin subsequent prethermal phases in a new multi-step heating process en route towards the ultimate heat death. We discuss implications for experiments on ferromagnetic thin films and other driving induced phenomena in frustrated magnets.

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confidence: 99%

Prethermal nematic order and staircase heating in a driven frustrated Ising magnet with dipolar interactions

Jin¹,

Pizzi²,

Knolle³

2022

Preprint

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“…(E) Hyperpolarization (I) involves MW chirps [22,23]. (F) Measurement (III) comprises a train of spinlocking 𝜃-pulses with interrogation in 𝑡 acq inter-pulse intervals [24]. Note: Throughout the manuscript, time 𝜏 describes the hyperpolarization (spin-lock) time and time 𝑡 describes the readout (detection) time.…”

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confidence: 99%

“…Ensemble 13 C readout (regime III) employs a protocol described in Refs. [24,34]. 13 C spins are prepared along the transverse axis x (𝜌 𝐼 =𝜀 𝑗 𝐼 𝑗 𝑥 ) on the Bloch sphere, and a train of spin-locking 𝜃-pulses are applied [35,36].…”

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confidence: 99%

“…13 C spins are prepared along the transverse axis x (𝜌 𝐼 =𝜀 𝑗 𝐼 𝑗 𝑥 ) on the Bloch sphere, and a train of spin-locking 𝜃-pulses are applied [35,36]. 13 C nuclei are interrogated in windows between the pulses, allowing their dynamics to be continuously tracked with high SNR [37]. Signal obtained corresponds to measuring the survival probability in the x-ŷ plane.…”

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confidence: 99%

“…flip-flop Hamiltonian [24]. Since [𝜌 𝐼 ,H (0) 𝐹 ]=0 commutes with the initial state, dipolar evolution is suppressed to leading order.…”

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confidence: 99%

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Electron induced nanoscale nuclear spin relaxation probed by hyperpolarization injection

Beatrez¹,

Pillai²,

Janes³

et al. 2022

Preprint

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We report on experiments that quantify the role of a central electronic spin as a relaxation source for nuclear spins in its nanoscale environment. Our strategy exploits hyperpolarization injection from the electron as a means to controllably probe an increasing number of nuclear spins in the bath, and subsequently interrogate them with high fidelity. Our experiments are focused on a model system of a nitrogen vacancy (NV) center electronic spin surrounded by several hundred 13 C nuclear spins. We observe that the 13 C transverse spin relaxation times vary significantly with the extent of hyperpolarization injection, allowing the ability to measure the influence of electron mediated relaxation extending over several nanometers. These results suggest interesting new means to spatially discriminate nuclear spins in a nanoscale environment, and have direct relevance to dynamic nuclear polarization and quantum sensors and memories constructed from hyperpolarized nuclei.

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NMR Experimental Study of Out-of-Equilibrium Spin Models

Cappellaro

Peng

Ramanathan

2022

Quantum Science and Technology

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Floquet Prethermalization with Lifetime Exceeding 90 s in a Bulk Hyperpolarized Solid

Cited by 29 publications

References 52 publications

Prethermal nematic order and staircase heating in a driven frustrated Ising magnet with dipolar interactions

Prethermal nematic order and staircase heating in a driven frustrated Ising magnet with dipolar interactions

Electron induced nanoscale nuclear spin relaxation probed by hyperpolarization injection

NMR Experimental Study of Out-of-Equilibrium Spin Models

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