Fast quantum logic gates with trapped-ion qubits

Nature
V M SchäferD M Lucas

Abstract

Quantum bits (qubits) based on individual trapped atomic ions are a promising technology for building a quantum computer. The elementary operations necessary to do so have been achieved with the required precision for some error-correction schemes. However, the essential two-qubit logic gate that is used to generate quantum entanglement has hitherto always been performed in an adiabatic regime (in which the gate is slow compared with the characteristic motional frequencies of the ions in the trap), resulting in logic speeds of the order of 10 kilohertz. There have been numerous proposals of methods for performing gates faster than this natural 'speed limit' of the trap. Here we implement one such method, which uses amplitude-shaped laser pulses to drive the motion of the ions along trajectories designed so that the gate operation is insensitive to the optical phase of the pulses. This enables fast (megahertz-rate) quantum logic that is robust to fluctuations in the optical phase, which would otherwise be an important source of experimental error. We demonstrate entanglement generation for gate times as short as 480 nanoseconds-less than a single oscillation period of an ion in the trap and eight orders of magnitude shorter than...Continue Reading

References

Apr 5, 2000·Nature·C A SackettC Monroe
Oct 4, 2000·Physical Review Letters·V MeyerM Towrie
Jun 18, 2002·Nature·D KielpinskiD J Wineland
Sep 28, 2004·Physical Review Letters·L-M Duan
Jul 30, 2005·Science·P O SchmidtD J Wineland
Mar 16, 2007·Physical Review Letters·M J McDonnellA M Steane
Sep 7, 2007·Nature·D L MoehringC Monroe
May 21, 2010·Physical Review Letters·S MachnesA Retzker
Sep 26, 2012·Physical Review Letters·R BowlerD J Wineland
Mar 9, 2013·Science·C Monroe, J Kim
Mar 9, 2013·Science·M H Devoret, R J Schoelkopf
Dec 11, 2013·Optics Letters·Rachel NoekJungsang Kim
Dec 11, 2014·Physical Review Letters·T P HartyD M Lucas
Oct 6, 2015·Nature·M VeldhorstA S Dzurak
Aug 20, 2016·Physical Review Letters·C J BallanceD M Lucas
Aug 20, 2016·Physical Review Letters·J P GaeblerD J Wineland
Jan 1, 1998·Journal of Research of the National Institute of Standards and Technology·D J WinelandD M Meekhof
Dec 30, 2017·Physical Review Letters·J D Wong-CamposC Monroe

❮ Previous
Next ❯

Citations

Oct 2, 2019·Physical Review Letters·M A SepiolD M Lucas
Mar 2, 2018·Nature·Tobias Schaetz
Jan 18, 2020·Physical Review Letters·G ZarantonelloC Ospelkaus
Jul 26, 2019·Nature·Yao LuKihwan Kim
Mar 1, 2018·Nature·Tobias Schaetz
Jun 4, 2020·The Review of Scientific Instruments·M K IvoryB B Blinov
Jun 13, 2020·Physical Review Letters·Yosep KimYoon-Ho Kim
Nov 9, 2019·Physical Review Letters·J VogelF Schmidt-Kaler
Dec 7, 2019·Physical Review Letters·Philip KieferTobias Schaetz
Jun 16, 2018·Physical Review Letters·Alexander K RatcliffeAndré R R Carvalho
Nov 18, 2018·Physical Review Letters·Yotam ShapiraRoee Ozeri
Sep 11, 2020·Physical Review Letters·A C HughesC J Ballance
Apr 4, 2020·Physical Review Letters·L J StephensonC J Ballance
Jul 23, 2019·Entropy·Cai ZhangHaozhen Situ
Oct 23, 2020·Nature·Karan K MehtaJonathan P Home
Mar 23, 2021·Communications in Mathematical Physics·Matthew CoudronThomas Vidick
Apr 7, 2021·The Review of Scientific Instruments·S GaoJ F Goodwin
Apr 17, 2021·Science·Nathalie P de LeonD W Steuerman
Jun 22, 2021·Physical Review Letters·Reinhold BlümelYunseong Nam
Dec 9, 2020·Nano Letters·Markus LeisegangMatthias Bode
Sep 6, 2019··Travis S. HumbleRonald J. Sadlier

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.