Fluxonium: Single Cooper-Pair Circuit Free of Charge Offsets

2009/06/30 by Vladimir Manucharyan, Vladimir E. Manucharyan, Jens Koch +3 · 20 citations
Computer Science · Engineering · Physics and Astronomy · #Charge (physics) #Computer science #Electrical engineering #Electronic circuit #Engineering #Noise (video) #Offset (computer science) #Open quantum system #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum circuit #Quantum computer #Quantum error correction #Quantum mechanics #Quantum noise #Quantum point contact #Quantum technology #Quantum well #Qubit #cond-mat.mes-hall #cond-mat.supr-con

paper · pdf · doi:10.1126/science.1175552

published as Science 326, 113-116 (2009) · Introduction and title updated

openalex publication_date 2009/10/01 · arxiv created 2009/10/20 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The promise of single Cooper-pair quantum circuits based on tunnel junctions for metrology and quantum information applications is severely limited by the influence of offset charges: random, slowly drifting microscopic charges inherent in many solid-state systems. By shunting a small junction with the Josephson kinetic inductance of a series array of large-capacitance tunnel junctions, thereby ensuring that all superconducting islands are connected to the circuit by at least one large junction, we have realized a new superconducting artificial atom that is totally insensitive to offset charges. Yet its energy levels manifest the anharmonic structure associated with single Cooper-pair effects, a useful component for solid-state quantum computation.

Citations

• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• Charge insensitive qubit design derived from the Cooper pair box
• Coherent Quantum Dynamics of a Superconducting Flux Qubit
• Persistent Current in Superconducting Nanorings
• Manipulating quantum entanglement with atoms and photons in a cavity
• Quantum Coherence with a Single Cooper Pair
• ac Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
• Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics

Cited by

• Landau-Zener-Stückelberg spectroscopy of a fluxonium quantum circuit
• Parameter optimization for the unimon qubit
• Engineered broadband Purcell protection using a shared Π-filter for multiplexed superconducting qubits
• Fundamentals and Applications of Hybrid Electro- and Opto-mechanical system coupled to Superconducting Qubit: A Short Review
• Simulation of a rapid qubit readout dependent on the transmission of a single fluxon
• Microwave response of a chiral Majorana interferometer
• Robust and efficient algorithms for high-dimensional black-box quantum optimization
• Microwave Spectroscopy of a Weakly Pinned Charge Density Wave in a Superinductor
• Suppression of2πphase slip due to hidden zero modes in one-dimensional topological superconductors
• Detector of microwave photon pairs based on a Josephson photomultiplier
• Geometric Superinductance Qubits: Controlling Phase Delocalization across a Single Josephson Junction
• Quartz-superconductor quantum electromechanical system
• Doubly nonlinear superconducting qubit
• Compressed sensing quantum process tomography for superconducting quantum gates
• Fast microwave-driven two-qubit gates between fluxonium qubits with a transmon coupler
• Granular aluminium as a superconducting material for high-impedance quantum circuits
• Fast, Lifetime-Preserving Readout for High-Coherence Quantum Annealers
• Coherent dynamics in long fluxonium qubits
• Minimizing the Discrimination Time for Quantum States of an Artificial Atom
• Nonlinear circuit quantum electrodynamics based on the charge-qubit–resonator interface

Related

• Entangling electrons by splitting Cooper pairs: Two-particle conductance resonance and time coincidence measurements
• Viewing protected superconducting qubits through the lens of the cat qubit
• Quantum Coulomb drag mediated by cotunneling of fluxons and Cooper pairs
• Resonant Cooper Pair Tunneling: Quantum Noise and Measurement Characteristics
• Flux qubits shed a new light on BCS theory and high-T_c superconductivity