Self-stabilized quantum optical Fredkin gate

Hu, Jonathan; Huang, Yu‐Ping; Kumar, Prem

doi:10.1364/ol.38.000522

Cited by 11 publications

(8 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, nonlinear interactions are also promising for controlled operations in photonics and have the potential to make the linear optics gates fully deterministic. These nonlinear interactions require a Kerr medium for which realizing an optical quantum Fredkin gate has been proposed [39,40]. There is also an interesting proposal for constructing an optical Fredkin gate using nanobiophotonics [41].…”

Section: Discussionmentioning

confidence: 99%

Fusing multipleWstates simultaneously with a Fredkin gate

et al. 2014

View full text Add to dashboard Cite

We propose an optical scheme to prepare large-scale entangled networks of W states. The scheme works by simultaneously fusing three polarization-encoded W states of arbitrary size via accessing only one qubit of each W state. It is composed of a Fredkin gate (controlled-swap gate), two fusion gates [as proposed in S. K. Ozdemir et al., New J. Phys. 13, 103003 (2011)], and an H -polarized ancilla photon. Starting with three n-qubit W states, the scheme prepares a new W state with 3(n − 1) qubits after postselection if both fusion gates operate successfully, i.e., a fourfold coincidence at the detectors. The proposed scheme reduces the cost of creating arbitrarily large W states considerably when compared to previously reported schemes.

show abstract

Section: Discussionmentioning

confidence: 99%

Fusing multipleWstates simultaneously with a Fredkin gate

et al. 2014

View full text Add to dashboard Cite

show abstract

“…This dual-core fibre based switching technique has many advantages over other approaches. For instance, ultrashort pulses in rather-short dual-core fibres (DCF) can be self-switched while the nonlinear optical loop mirror requires meter-long fibres to induce sufficient nonlinear phase shift and, in the case of silica fibres, tens of nanojoule pulse energies [7]. Another example is the fibre grating coupler using chalcogenide fibres [8,9].…”

Section: Introductionmentioning

confidence: 99%

Broadband self-switching of femtosecond pulses in highly nonlinear high index contrast dual-core fibre

Longobucco

Astrauskas

Pugžlys

et al. 2020

Optics Communications

View full text Add to dashboard Cite

In this paper, we demonstrate a pulse energy-governed nonlinear self-switching of femtosecond pulses at wavelength of 1700 nm in highly nonlinear high index contrast dual-core fibre. The fibre structure is composed of two microdimension cores and a solid cladding made of two thermally matched soft glasses developed inhouse. Double switching behaviour under monotonic increase of the input pulse energy from 1 nJ to 3 nJ was observed at 35 mm fibre length in its anomalous dispersion region. A spatial intensity distribution measurement identified a switching contrast of 16.7 dB, and the registered spectra of the two output channels revealed a broadband switching behaviour within 150 nm. The obtained results indicate a novel type of solitonic switching and represent a significant progress in comparison to previous experimental works and has a high application potential.

show abstract

“…This can also be obtained by matrix calculation. The following is an example for reversible switching array circuit, F I G U R E 1 4 The insertion loss (IL) at various output ports for different control input combinations of mirror control inputs <edcba> (decimal equivalent in x-axis) of the reversible switching array circuit…”

Section: Discussionmentioning

confidence: 99%

Negative controlled Fredkin gate circuits with mirrors

Chattopadhyay¹

2021

IET Quantum Communication

View full text Add to dashboard Cite

Data loss is a major problem in conventional circuits. But it cannot happen in reversible circuits. So energy dissipation per bit loss does not happen in this circuit. Also, recovery of input data can be possible in this circuit. Negative controlled Fredkin gate (NCF) is a self-invertible reversible gate. It performs SWAP operation if its control input is logic zero. In this paper, a mechanically controlled mirror-based NCF gate is designed, where the operation is based on the movement of mirrors. To move the mirror from its position electrical signal can be used. Optical signals are used in computational operations. Some complex reversible circuits viz. some logical operations (XOR-XNOR, AND-NAND, OR-NOR), DE-MUX/MUX, switching, and data shifting circuits are also shown in this paper. Quantum realization of the circuit was performed. Also, the matrix calculation was done to find out the operation of the circuit. Optical delay, optical cost, quantum delay, and quantum cost of every proposed design were calculated.

show abstract

Self-stabilized quantum optical Fredkin gate

Cited by 11 publications

References 21 publications

Fusing multipleWstates simultaneously with a Fredkin gate

Fusing multipleWstates simultaneously with a Fredkin gate

Broadband self-switching of femtosecond pulses in highly nonlinear high index contrast dual-core fibre

Negative controlled Fredkin gate circuits with mirrors

Contact Info

Product

Resources

About