Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols
arXiv:2511.20026 · doi:10.1103/g22y-z8h3
Abstract
Fast coherent state transport is essential to quantum computation and quantum information processing. While an adiabatic transport of atomic qubits guarantees a high fidelity of the state preparation, it requires a long timescale that defies efficient quantum operations. Here, we propose an adaptable and fast bang-bang-bang (BBB) protocol, utilizing a combination of forwardand backward-moving trap potentials, to expedite the coherent state transport. This protocol approaches the quantum speed limit under a harmonic trap potential, surpassing the performance by the forward-moving-only potential protocols. We further showcase the advantage of applying squeezed coherent state evolution under a deeper potential followed by a weaker one, where a design of symmetric squeezing potential transports promotes an even shorter timescale for genuine state preparation. Our protocols outperform conventional forward-moving-only methods, providing new insights and opportunities for rapid state transport and preparation, ultimately advancing the capabilities of quantum control and quantum operations.
References in corpus (46)
- Dynamical Decoupling of Open Quantum Systems
- Quantum computing with trapped ions
- Logical quantum processor based on reconfigurable atom arrays
- Shortcuts to adiabaticity: concepts, methods, and applications
- Quantum Phases of Matter on a 256-Atom Programmable Quantum Simulator
- An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
- The maximum speed of dynamical evolution
- Programmable quantum simulation of 2D antiferromagnets with hundreds of Rydberg atoms
- Fast optimal frictionless atom cooling in harmonic traps
- Synthetic three-dimensional atomic structures assembled atom by atom
- Demonstration of multi-qubit entanglement and algorithms on a programmable neutral atom quantum computer
- High-fidelity parallel entangling gates on a neutral atom quantum computer
- Optimal Control at the Quantum Speed Limit
- Ion-trap measurements of electric-field noise near surfaces
- A Race Track Trapped-Ion Quantum Processor
- Complete methods set for scalable ion trap quantum information processing
- Cooling a single atom in an optical tweezer to its quantum ground state
- Coherent Diabatic Ion Transport and Separation in a Multi-Zone Trap Array
- Fast atomic transport without vibrational heating
- Bang-bang control of fullerene qubits using ultra-fast phase gates
- Shortcuts to adiabaticity by counterdiabatic driving for trapped-ion displacement in phase space
- Two-dimensional transport and transfer of a single atomic qubit in optical tweezers
- Quantum state transfer between motion and light
- Optimal trajectories for efficient atomic transport without final excitation
- Entanglement transport and a nanophotonic interface for atoms in optical tweezers
- A tweezer array with 6100 highly coherent atomic qubits
- Experimental inhibition of decoherence on flying qubits via bang-bang control
- Grey-molasses optical-tweezer loading: Controlling collisions for scaling atom-array assembly
- Spin-motion entanglement and state diagnosis with squeezed oscillator wavepackets
- Transport dynamics of single ions in segmented microstructured Paul trap arrays
- Automatic spin-chain learning to explore the quantum speed limit
- Demonstration of quantum brachistochrones between distant states of an atom
- Fast quantum control and light-matter interactions at the 10,000 quanta level
- Quantum Speed Limit for States with a Bounded Energy Spectrum
- Controlling the transport of an ion: Classical and quantum mechanical solutions
- High-fidelity fast quantum transport with imperfect controls
- Quantum control of the motional states of trapped ions through fast switching of trapping potentials
- Manipulating the quantum information of the radial modes of trapped ions: Linear phononics, entanglement generation, quantum state transmission and non-locality tests
- High-Fidelity Preservation of Quantum Information During Trapped-Ion Transport
- Quantum state manipulation of trapped atomic ions
- Smooth bang-bang shortcuts to adiabaticity for atomic transport in a moving harmonic trap
- Optimal control transport of neutral atoms in optical tweezers at finite temperature
- High-fidelity Rydberg controlled-Z gates with optimal pulses
- Motional decoherence in ultracold Rydberg atom quantum simulators of spin models
- Counterdiabatic Driving with Performance Guarantees
- Optimal control in phase space applied to minimal-time transfer of thermal atoms in optical traps