Flux-Tunable Regimes and Supersymmetry in Twisted Cuprate Heterostructures
arXiv:2405.03454 · doi:10.1063/5.0217614
Abstract
Van der Waals assembly allows for the creation of Josephson junctions in an atomically sharp interface between two exfoliated BiSrCaCuO (Bi-2212) flakes that are twisted relative to each other. In a narrow range of angles close to , the junction exhibits a regime where time-reversal symmetry can be spontaneously broken and it can be used to encode an inherently protected qubit called flowermon. In this work we investigate the physics emerging when two such junctions are integrated in a SQuID circuit threaded by a magnetic flux. We show that the flowermon qubit regime is maintained up to a finite critical value of the magnetic field and, under appropriate conditions, it is protected against both charge and flux noise. For larger external fluxes, the interplay between the inherent twisted d-wave nature of the order parameter and the external magnetic flux enables the implementation of different artificial atoms, including a flux-biased protected qubit and a supersymmetric quantum circuit.
References in corpus (44)
- Magic-angle graphene superlattices: a new platform for unconventional superconductivity
- Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
- Charge insensitive qubit design derived from the Cooper pair box
- Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene
- Coherent Quantum Dynamics of a Superconducting Flux Qubit
- Decoherence in Josephson Qubits from Dielectric Loss
- Decoherence in a superconducting quantum bit circuit
- The Flux Qubit Revisited to Enhance Coherence and Reproducibility
- Quiet SDS Josephson Junctions for Quantum Computing
- Surface participation and dielectric loss in superconducting qubits
- Inhomogeneity of charge density wave order and quenched disorder in a high Tc superconductor
- Scale-free structural organization of oxygen interstitials in La2CuO4+y
- Protected gates for superconducting qubits
- Superconducting Nanocircuits for Topologically Protected Qubits
- Evolution and Control of Oxygen Order in a Cuprate Superconductor
- High-temperature topological superconductivity in twisted double layer copper oxides
- Experimental realization of an intrinsically error-protected superconducting qubit
- Universal fast flux control of a coherent, low-frequency qubit
- Optimum inhomogeneity of local lattice distortions in La2CuO4+y
- A Parity-Protected Superconductor-Semiconductor Qubit
- Superconducting circuit protected by two-Cooper-pair tunneling
- The superconducting quasicharge qubit
- Sign reversing Hall effect in atomically thin high temperature superconductors
- Operation of universal gates in a DXD superconducting solid state quantum computer
- Coherence properties of the 0- qubit
- Protected Josephson Rhombi Chains
- Topological order in the insulating Josephson junction array
- Bifluxon: Fluxon-Parity-Protected Superconducting Qubit
- Encapsulating high-temperature superconducting twisted van der Waals heterostructures blocks detrimental effects of disorder
- Twisted cuprate van der Waals heterostructures with controlled Josephson coupling
- Charge-4e supercurrent in a two-dimensional InAs-Al superconductor-semiconductor heterostructure
- Magnifying quantum phase fluctuations with Cooper-pair pairing
- Doping phase diagram of a Hubbard model for twisted bilayer cuprates
- Spatially correlated incommensurate lattice modulations in an atomically thin high-temperature Bi_{2.1}Sr_{1.9}CaCu_{2.0}O_{8+δ} superconductors
- Engineering Framework for Optimizing Superconducting Qubit Designs
- Enhanced coherence in superconducting circuits via band engineering
- 2D high temperature superconductor integration in contact printed circuit boards
- Hardware implementation of quantum stabilizers in superconducting circuits
- Supersymmetry in the Majorana Cooper-Pair Box
- Simulation of supersymmetric quantum mechanics in a Cooper-pair box shunted by a Josephson rhombus
- Doping dependence of chiral superconductivity in near twisted bilayer cuprates
- Spectral Signatures of Non-Trivial Topology in a Superconducting Circuit
- Hall-effect in the MnBi_2Te_4 crystal using silicon nitride nanomembrane via contacts
- The quartic Blochnium: an anharmonic quasicharge superconducting qubit