A review of silicon microfabricated ion traps for quantum information processing

Cho, Dong‐il Dan; Hong, Seok‐Jun; Lee, Minjae; Kim, Tae Hyun

doi:10.1186/s40486-015-0013-3

Cited by 32 publications

(24 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Trapped atoms and ions represent a very powerful and versatile system to investigate fundamental physical questions and are also one of the leading platforms for the realization of first‐generation quantum computers . Furthermore, the miniaturization and on‐chip integration of ion traps is nowadays routinely achieved allowing for the realization of micrometer sized ion traps in a scalable way . Also, the utilization for the use as nonclassical light sources was already proven .…”

Section: Quantum Dots As Nonclassical Light Sourcesmentioning

confidence: 99%

Semiconductor Quantum Dots for Integrated Quantum Photonics

et al. 2019

View full text Add to dashboard Cite

Quantum mechanics promises to have a strong impact on many aspects of research and technology, improving classical analogues via purely quantum effects. A large variety of tasks are currently under investigation, for example, the implementation of quantum computing, sensing, metrology, and communication. From a general perspective, in a similar way as classical computing benefited by the reduction of the device footprint, enabling the realization of highly complex chips, a range of quantum applications will sensibly improve thanks to the successful realization of on-chip quantum photonics. Conversely to bulky table-top experiments, it would be very advantageous to transfer all required functionalities on the same quantum photonic chip. The key elements for quantum photonic circuits are on-demand nonclassical light sources, a versatile photonic logic, the ability to store quantum information, and highly efficient detectors, directly integrated on-chip. Among several systems capable of the efficient generation of singleand indistinguishable photons, quantum dots are rapidly establishing as one of the most appealing candidates. This paper reviews the recent progress in the on-chip integration of quantum-dot-based nonclassical light sources as well as in the development of the main building blocks, either integrated monolithically or hybridly on a compact and scalable platform. IntroductionFrom the foundation of quantum mechanics in the early 20th century to explain fundamental physical observations, over the development of transistors and lasers in the 1950s and 1960s, the second quantum revolution is now in full swing. The driving force behind this continuing "quantum footrace" are quantum mechanical effects based on superposition and entanglement that can lead to profound changes. Especially in the field of quantum information science, dramatic improvements are expected in terms of increased computational speed and communication security if compared with classical counterparts.Talking about quantum supremacy, two problems-Grover's algorithm for the efficient search in large unsorted databases and Shor's algorithm for the prime factorization of large integers-are frequently mentioned. [1][2][3] Grover's quantum search algorithm can find an element of a search space M in O( √ M) operations compared to the best known classical algorithms approximately requiring O(M) steps. [4] Shor's algorithm can prime factorize large integers with N bits in polynomial speed compared to the exponential scaling of classical algorithms. Currently, several cryptography schemes in electronic communication systems rely on the difficulty of prime factorization as its security method. Consequently, a quantum computer could break the cryptographic keys quickly by calculating or searching exhaustively all key possibilities, which may allow an eavesdropper to intercept the communication channel. [5] However, quantum key distribution schemes can be alternatively used, which are based on the secure exchange of a cryptographic key between remote...

show abstract

Section: Quantum Dots As Nonclassical Light Sourcesmentioning

confidence: 99%

Semiconductor Quantum Dots for Integrated Quantum Photonics

et al. 2019

View full text Add to dashboard Cite

show abstract

“… Scanning electron micrograph image of a surface ion trap fabricated by our group [ 11 ]. (The design layout of the ion trap uses the trap chip of Sandia National Laboratory [ 12 ] as the benchmark.)…”

Section: Figurementioning

confidence: 99%

“…Microfabricated ion traps whose electrodes are laid on a plane are known as “surface ion traps” or “planar ion traps” ( Figure 1 ). Currently, surface ion traps are widely used as platforms for quantum information processing [ 10 , 11 , 12 ]. In addition, the surface ion traps have potentiality in the realization of portable optical clocks, because the ion-trap system can be miniaturized by adopting the surface ion traps [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Guidelines for Designing Surface Ion Traps Using the Boundary Element Method

Hong

Lee

Cheon

et al. 2016

Sensors

Self Cite

View full text Add to dashboard Cite

Ion traps can provide both physical implementation of quantum information processing and direct observation of quantum systems. Recently, surface ion traps have been developed using microfabrication technologies and are considered to be a promising platform for scalable quantum devices. This paper presents detailed guidelines for designing the electrodes of surface ion traps. First, we define and explain the key specifications including trap depth, q-parameter, secular frequency, and ion height. Then, we present a numerical-simulation-based design procedure, which involves determining the basic assumptions, determining the shape and size of the chip, designing the dimensions of the radio frequency (RF) electrode, and analyzing the direct current (DC) control voltages. As an example of this design procedure, we present a case study with tutorial-like explanations. The proposed design procedure can provide a practical guideline for designing the electrodes of surface ion traps.

show abstract

“…Over the past decades, various qubit species have been realized, including superconducting qubits [2], [5], semiconductor quantum dots [6], [7], and trapped ion qubits [8]. Among the abovementioned qubits, trapped ion qubits received much attentions due to its high fidelity in quantum entanglement, as trapped ions are intrinsically identical [9]. To apply trapped ion qubits in quantum computing device, Honeywell implemented QCCD (quantum charge-coupled device) architecture into a programmable trapped ion quantum computer.…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Grating Couplers for the Optical Addressing of Trapped Ions

Lim

Zhao

et al. 2021

IEEE Photonics J.

View full text Add to dashboard Cite

In this work, silicon photonics structures for the optical addressing of trapped ion is developed for quantum computing applications. Grating-waveguide-grating structures of various designs are designed, and fabricated for various radius curvatures of 12, 15, 25 and 30 µm, respectively. From the optical measurements, gratings with radius of curvature of 25 and 30 µm exhibit lower power loss of 36.5 and 33.9 dB with better-focused beam profiles as compared to those with radius of curvature of 12 and 15 µm. The beam width from these gratings ranges between 17.31 to 41.54 µm, which provides the feasibility to perform optical addressing on 2 to 4 Sr + ions trapped along the ground electrode of the ion trap.

show abstract

A review of silicon microfabricated ion traps for quantum information processing

Cited by 32 publications

References 75 publications

Semiconductor Quantum Dots for Integrated Quantum Photonics

Semiconductor Quantum Dots for Integrated Quantum Photonics

Guidelines for Designing Surface Ion Traps Using the Boundary Element Method

Design and Fabrication of Grating Couplers for the Optical Addressing of Trapped Ions

Contact Info

Product

Resources

About