Tracking spin qubit frequency variations over 912 days

Kavli Affiliate: Lieven Vandersypen| First 5 Authors: Kenji Capannelli, Kenji Capannelli, , , | Summary:Solid-state qubits are sensitive to their microscopic environment, causing the qubit properties to fluctuate on a wide range of timescales. The sub-Hz end of the spectrum is usually dealt with by repeated background calibrations, which bring considerable overhead. It is thus […]


Continue.. Tracking spin qubit frequency variations over 912 days

Probing the quantum metric of 3D topological insulators

Kavli Affiliate: Andrea D. Caviglia| First 5 Authors: Giacomo Sala, Giacomo Sala, , , | Summary:The surface states of 3D topological insulators possess geometric structures that imprint distinctive signatures on electronic transport. A prime example is the Berry curvature, which controls electric frequency doubling via a higher order moment, called Berry curvature triple. In addition […]


Continue.. Probing the quantum metric of 3D topological insulators

Probing the quantum metric of 3D topological insulators

Kavli Affiliate: Andrea D. Caviglia| First 5 Authors: Giacomo Sala, Giacomo Sala, , , | Summary:The surface states of 3D topological insulators possess geometric structures that imprint distinctive signatures on electronic transport. A prime example is the Berry curvature, which controls, for instance, electric frequency doubling via its higher order moments. In addition to the […]


Continue.. Probing the quantum metric of 3D topological insulators

On the accuracy of twirled approximations in repeater chains

Kavli Affiliate: Stephanie Wehner| First 5 Authors: Bethany Davies, Bethany Davies, , , | Summary:In the performance analysis of quantum networks, it is common to approximate bipartite entangled states as either being Bell-diagonal or Werner states. We refer to these as twirled approximations because it is possible to bring any state to such a form […]


Continue.. On the accuracy of twirled approximations in repeater chains

Accurate ground states of $SU(2)$ lattice gauge theory in 2+1D and 3+1D

Kavli Affiliate: Eliska Greplova| First 5 Authors: Thomas Spriggs, Thomas Spriggs, , , | Summary:We present a neural network wavefunction framework for solving non-Abelian lattice gauge theories in a continuous group representation. Using a combination of $SU(2)$ equivariant neural networks alongside an $SU(2)$ invariant, physics-inspired ansatz, we learn a parameterization of the ground state wavefunction […]


Continue.. Accurate ground states of $SU(2)$ lattice gauge theory in 2+1D and 3+1D

Optomechanical method for characterizing thermal transport across van der Waals interfaces

Kavli Affiliate: Herre Van Der Zant| First 5 Authors: Hanqing Liu, Hanqing Liu, , , | Summary:For the development of nanoscale electronics and photonics using atomically thin two-dimensional (2D) materials, it is important to realize van der Waals (vdW) interfaces with low thermal resistance, to minimize performance reduction caused by heat accumulation. However, characterizing the […]


Continue.. Optomechanical method for characterizing thermal transport across van der Waals interfaces

Quantum Frequency Conversion of Single Photons from a Tin-Vacancy Center in Diamond

Kavli Affiliate: Ronald Hanson| First 5 Authors: Julia M. Brevoord, Julia M. Brevoord, , , | Summary:Diamond tin-vacancy (SnV) centers are promising candidates for building quantum network nodes. However, their native photon emission at 619 nm is incompatible with metropolitan-scale networks operating at low-loss telecom wavelengths. To address this, we demonstrate highly efficient, low-noise quantum […]


Continue.. Quantum Frequency Conversion of Single Photons from a Tin-Vacancy Center in Diamond

Interplay of energy and charge transfer in WSe2/CrSBr heterostructures

Kavli Affiliate: Herre Van Der Zant| First 5 Authors: José Roberto de Toledo, José Roberto de Toledo, , , | Summary:Van der Waals heterostructures (vdWHs) composed of transition-metal dichalcogenides (TMDs) and layered magnetic semiconductors offer great opportunities to manipulate exciton and valley properties of TMDs. Here, we present magneto-photoluminescence (PL) studies in a WSe2 monolayer […]


Continue.. Interplay of energy and charge transfer in WSe2/CrSBr heterostructures

Computationally Tractable Offline Quantum Experimental Design for Nuclear Spin Detection

Kavli Affiliate: Tim H. Taminiau| First 5 Authors: B. Varona-Uriarte, B. Varona-Uriarte, , , | Summary:The characterization of nuclear spin environments in solid-state devices plays an important role in advancing quantum technologies, yet traditional methods often demand long measurement times. To address this challenge, we extend our recently developed deep-learning-based SALI model (Signal-to-image ArtificiaL Intelligence) […]


Continue.. Computationally Tractable Offline Quantum Experimental Design for Nuclear Spin Detection