Kavli Affiliate: Menno Veldhorst| First 5 Authors: Hanifa Tidjani, Hanifa Tidjani, , , | Summary:Quantum dots can confine single electrons or holes to define spin qubits that can be operated with high fidelity. Experimental work has progressed from linear to two-dimensional arrays of quantum dots, enabling qubit interactions that are essential for quantum simulation and […]
Kavli Affiliate: Gary Steele| First 5 Authors: Byoung-moo Ann, Byoung-moo Ann, , , | Summary:Microwave drives applied to superconducting qubits (SCQs) are central to high-fidelity control and fast readout. However, recent studies find that even drives far below the superconducting gap frequency may cause drive-induced quasiparticle generation (QPG) across Josephson junctions (JJs), posing a serious […]
Kavli Affiliate: Leonardo Dicarlo| First 5 Authors: Yuejie Xin, Yuejie Xin, , , | Summary:Leakage to non-computational states is a source of correlated errors in both time and space that limits the effectiveness of quantum error correction (QEC) with superconducting circuits. We present and experimentally demonstrate a high-fidelity, leakage reduction unit (LRU) operating concurrently with […]
Kavli Affiliate: Herre Van Der Zant| First 5 Authors: Josep Ingla-Aynés, Josep Ingla-Aynés, , , | Summary:The interaction between itinerant electrons and localized spins is key to a wide range of electronic phenomena. Of particular interest is the regime where the interacting electrons exhibit both spin and valley degeneracy, resulting in SU(4) Kondo physics. However, […]
Kavli Affiliate: Stephanie Wehner| First 5 Authors: Thomas R. Beauchamp, Thomas R. Beauchamp, , , | Summary:The aim of a quantum network is to enable the generation of end-to-end entangled links between end nodes of the network, so that they can execute quantum network applications. To facilitate this, it is desirable to have robust control […]
Kavli Affiliate: Ronald Hanson| First 5 Authors: Nina Codreanu, Nina Codreanu, , , | Summary:The tin-vacancy center in diamond (SnV) has emerged as a compelling building block for realizing next-generation quantum networks thanks to its excellent optical and spin properties. Coupling to photonic crystal cavities (PCCs) promises to further enhance the SnV light-matter interface and […]
Kavli Affiliate: Michael Wimmer| First 5 Authors: Sebastian Miles, Sebastian Miles, , , | Summary:We theoretically explore the electronic structure of holes in cylindrical Germanium/Silicon core/shell nanowires using a perturbation theory approach. The approach yields a set of interpretable and transferable effective low-energy models for the lowest few sub-bands up to fifth order for experimentally […]
Kavli Affiliate: Wolfgang Tittel| First 5 Authors: Luozhen Li, Luozhen Li, , , | Summary:We characterize the spectroscopic and coherence properties of the 1451.37 nm excited-state zero-phonon line (ZPL) between the $^3F_4$ and the $^3H_4$ manifolds of a thulium-doped yttrium aluminum perovskite ($textTm^3+$:$textYAlO_3$) crystal at temperatures around 1.5 K. We measure the absorption spectrum between […]
Kavli Affiliate: Menno Veldhorst| First 5 Authors: Daniel Jirovec, Daniel Jirovec, , , | Summary:Quantum simulators enable studies of many-body phenomena which are intractable with classical hardware. Spins in devices based on semiconductor quantum dots promise precise electrical control and scalability advantages, but accessing many-body phenomena has so far been restricted by challenges in nanofabrication […]
Kavli Affiliate: Lieven Vandersypen| First 5 Authors: Daniel Jirovec, Daniel Jirovec, , , | Summary:Quantum simulators enable studies of many-body phenomena which are intractable with classical hardware. Spins in devices based on semiconductor quantum dots promise precise electrical control and scalability advantages, but accessing many-body phenomena has so far been restricted by challenges in nanofabrication […]