Efficient sideband cooling protocol for long trapped-ion chains

• URL: http://arxiv.org/abs/2002.04133v1
• Date: Mon, 10 Feb 2020 23:32:41 GMT
• Title: Efficient sideband cooling protocol for long trapped-ion chains
• Authors: J.-S. Chen, K. Wright, N. C. Pisenti, D. Murphy, K. M. Beck, K. Landsman, J. M. Amini and Y. Nam
• Abstract summary: Trapped ions are a promising candidate for large scale quantum computation. We present a technique whereby individual ions are used to cool individual motional modes in parallel.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Trapped ions are a promising candidate for large scale quantum computation. Several systems have been built in both academic and industrial settings to implement modestly-sized quantum algorithms. Efficient cooling of the motional degrees of freedom is a key requirement for high-fidelity quantum operations using trapped ions. Here, we present a technique whereby individual ions are used to cool individual motional modes in parallel, reducing the time required to bring an ion chain to its motional ground state. We demonstrate this technique experimentally and develop a model to understand the efficiency of our parallel sideband cooling technique compared to more traditional methods. This technique is applicable to any system using resolved sideband cooling of co-trapped atomic species and only requires individual addressing of the trapped particles.

Related papers

• Analysis of ion chain sympathetic cooling and gate dynamics [0.0]
  We analyze best practices for sympathetic cooling of long chains of trapped ions using analytical and computational methods. We show that optimal cooling performance is achieved when coolants are placed at the center of the chain. We also show that cooling as often as possible when running a circuit is optimal when the qubit coherence time is otherwise long.
  arXiv  Detail & Related papers  (2024-05-22T17:26:18Z)
• Quench dynamics in higher-dimensional Holstein models: Insights from Truncated Wigner Approaches [41.94295877935867]
  We study the melting of charge-density waves in a Holstein model after a sudden switch-on of the electronic hopping. A comparison with exact data obtained for a Holstein chain shows that a semiclassical treatment of both the electrons and phonons is required in order to correctly describe the phononic dynamics.
  arXiv  Detail & Related papers  (2023-12-19T16:14:01Z)
• Rapid Exchange Cooling with Trapped Ions [0.0]
  A quantum charge-coupled device (QCCD) is a leading candidate for advanced quantum information processing. Here, we demonstrate a different approach we call exchange cooling. Unlike sympathetic cooling, exchange cooling does not require trapping two different atomic species. This approach validates the feasibility of a single-species QCCD processor, capable of fast quantum simulation and computation.
  arXiv  Detail & Related papers  (2023-09-05T21:07:25Z)
• Quantum emulation of the transient dynamics in the multistate Landau-Zener model [50.591267188664666]
  We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity. Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
  arXiv  Detail & Related papers  (2022-11-26T15:04:11Z)
• Trapped Ions as an Architecture for Quantum Computing [110.83289076967895]
  We describe one of the most promising platforms for the construction of a universal quantum computer. We discuss from the physics involved in trapping ions in electromagnetic potentials to the Hamiltonian engineering needed to generate a universal set of logic gates.
  arXiv  Detail & Related papers  (2022-07-23T22:58:50Z)
• Chiral-coupling-assisted refrigeration in trapped ions [5.273668342847468]
  We show the capability of light-mediated chiral couplings between ions, which enables a superior cooling scheme. Our results help surpass the bottleneck of cooling procedure in applications of trapped-ion-based quantum computer and simulator.
  arXiv  Detail & Related papers  (2022-03-02T05:18:11Z)
• Pulsed multireservoir engineering for a trapped ion with applications to state synthesis and quantum Otto cycles [68.8204255655161]
  Reservoir engineering is a remarkable task that takes dissipation and decoherence as tools rather than impediments. We develop a collisional model to implement reservoir engineering for the one-dimensional harmonic motion of a trapped ion. Having multiple internal levels, we show that multiple reservoirs can be engineered, allowing for more efficient synthesis of well-known non-classical states of motion.
  arXiv  Detail & Related papers  (2021-11-26T08:32:39Z)
• A scalable helium gas cooling system for trapped-ion applications [51.715517570634994]
  A modular cooling system is presented for use with multiple ion-trapping experiments simultaneously. The cooling system is expected to deliver a net cooling power of 111 W at 70 K to up to four experiments.
  arXiv  Detail & Related papers  (2021-06-14T16:37:54Z)
• Fast Laser Cooling Using Optimal Quantum Control [11.815965846475027]
  State of the art cooling schemes often work under a set of optimal cooling conditions derived analytically. We show that faster cooling can be achieved while at the same time a low average phonon occupation can be retained.
  arXiv  Detail & Related papers  (2021-06-10T01:01:18Z)
• Algorithmic Ground-state Cooling of Weakly-Coupled Oscillators using Quantum Logic [52.77024349608834]
  We introduce a novel algorithmic cooling protocol for transferring phonons from poorly- to efficiently-cooled modes. We demonstrate it experimentally by simultaneously bringing two motional modes of a Be$+$-Ar$13+$ mixed Coulomb crystal close to their zero-point energies. We reach the lowest temperature reported for a highly charged ion, with a residual temperature of only $Tlesssim200mathrmmu K$ in each of the two modes.
  arXiv  Detail & Related papers  (2021-02-24T17:46:15Z)
• Robust dynamical exchange cooling with trapped ions [0.0]
  We investigate theoretically the possibility for robust and fast cooling of a trapped atomic ion by transient interaction with a pre-cooled ion. The transient coupling is achieved through dynamical control of the ions' equilibrium positions. For settings appropriate to a currently operational trap in our laboratory, we find that robust performance could be achieved down to $6.3$ motional cycles.
  arXiv  Detail & Related papers  (2020-02-11T19:00:32Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.