Detection-dependent six-photon Holland-Burnett state interference

Jin, Rui; Fujiwara, Mikio; Shimizu, Ryosuke; Collins, Robert J.; Buller, Gerald S.; Yamashita, Taro; Miki, Shigehito; Terai, Hirotaka; Takeoka, Masahiro; Sasaki, Masahide

doi:10.1038/srep36914

Cited by 24 publications

(18 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our results, on the one hand, provide a new characteristic of multi-photon interference [22,24,25,[27][28][29][30][31], and, on the other hand, they may inspire investigation of a more foundational character, cf. the different view on wave-particle duality in first and second quantization [8,9,32,33].…”

mentioning

confidence: 76%

Reversed interplay of quantum interference and which-way information in multiphoton entangled states

Tichy

Lim

et al. 2017

Phys. Rev. A

View full text Add to dashboard Cite

We report experimental studies of the multi-photon quantum interference of a two-mode threephoton entangled Fock state |2, 1 + |1, 2 impinging on a two-port balanced beam splitter. When the distinguishability between the two input paths is increased, we observe a reduction followed by a resurgence of the quantum interference signal. We ascribe this unusual behavior to the competition among contributions from distinct numbers of interfering photons. Our theoretical analysis shows that this phenomenon will occur for any entangled Fock-state input of the form |N, M + |M, N where M, N > 0. Our results are an indication that wave-particle duality may give rise to a wide range of, largely unexplored, phenomena in multi-particle interference.PACS numbers: 03.65. Yz, 42.50.Ar, Quantum interference is one of the most fundamental features of quantum mechanics, observed in a variety of quantum systems [1][2][3][4][5]. A prototype example is the double slit experiment, where the repeated incidence of a single particle leaves wave-like interference fringes on a screen [1,6]. Perfect interference is only observed if no information is available about which path the particle has taken through the slits [7], while partial path distinguishability gradually reduces the fringe contrast [8,9]. For example, a time delay applied to one of the two paths yields which-path information and ultimately causes the interference fringes to vanish. Previous studies on interference of a single photon and two photons have thus shown that increasing the distinguishability simply reduces the interference fringe visibility [10][11][12][13][14], as a quantitative consequence of wave-particle duality [8,9].In this work, we study multi-photon interference and observe that, in contrast to the single-photon case, interference signals may vanish and reappear under a gradually increased path distinguishability. Our theoretical analysis reveals that the observed phenomena are not due to information erasure [15,16], non Markovian processes [17,18], or a periodic decoherence [19,20], but due to a passage between different numbers of interfering photons which exhibit distinct interference fringes. We find that with the exception of N 00N states, multi-photon states in general exhibit a nontrivial relationship between interference fringes and which-path distinguishability. Experimental results.- Figure 1(a) shows a schematic of our experimental setup to observe multi-photon interference. This setup, illuminated with the single-photon stateis equivalent to the aforementioned double-slit experiment [1,6], and single-photon detection at D d , denoted

show abstract

mentioning

confidence: 76%

Reversed interplay of quantum interference and which-way information in multiphoton entangled states

Tichy

Lim

et al. 2017

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…Superconducting nanowire single photon detectors (SSPDs) 10 are promising for HOM observation because of the high DE of ~90% 11 , low DCR of a few counts/s 12 , and short timing jitter as low as ~20 ps with a Gaussian instrumental response 13 . Successful observations of HOM interference using SSPDs have been demonstrated 3,4,9,14,15 . Meanwhile, the measured timing jitter of SSPD systems still has potential for improvement by suppressing external contributions other than the intrinsic jitter of detector itself, such as the contributions of the low noise amplifier and time correlated single-photon counting (TCSPC) module.…”

Section: Textmentioning

confidence: 99%

Superconducting coincidence photon detector with short timing jitter

Miki

Miyajima

Yabuno

et al. 2018

Applied Physics Letters

View full text Add to dashboard Cite

We demonstrate the operation of a coincidence photon detector with short timing jitter consisting of two superconducting nanowire single photon detectors (SSPDs) and a single flux quantum (SFQ) circuit. By utilizing the timing discrimination capability of the SFQ coincidence circuit, the full width at half maximum (FWHM) timing jitter of the entire coincidence photon detector was evaluated as 32.3 ps, which is 36 ps less than that of the standard commercial time correlated single photon counting (TCSPC) module, and the timing jitter of the SSPD was estimated as ~15 ps. Owing to short timing jitter characteristics, our coincidence photon detector could correctly capture the effect of pulse-width broadening by insertion of an optical bandpass filter. We have also demonstrated that our coincidence photon detection clearly shows Hong-Ou-Mandel (HOM) interference with a weak coherent pulse. These results are a crucial step to realizing high timing resolution coincidence measurements, ushering in a technology for timing measurement based multi-photon quantum interference.

show abstract

“…最后一步, (2N-1)步的操作: [27] 已证明在量子电动力学(CQED)中, U x y ( ; ) qudit Bell和qubit-qutrit Bell态 [28][29][30][31][32][33][34][35] ; UCNOT(c;t)表示通常的qubit-qubit CNOT门, UCNOT(c;t (N) )表示方程(8)所示的 qubit-qudit CNOT门 [13,[36][37][38] ; UC-V(c (N) ;t)表示方程(7)所示 qudit-qubit受控幺正门 [13,[36][37][38] ; U x y ( , ) i j 表示方程(27)所示2-qutrit的条件交换门 [27,28] . 显然, 相比Eisert等人 [15] 最初提出的方案和本课题组 [16] 2011年提出的方案, 本文方案所需的两体操作数量较少, 且不需要辅助系统.…”

Section: 第4步 T操作unclassified

Quantum networks for implementing effiently a nonlocal <italic>N</italic>-qubit controlled unitary gate via non-symmetric quantum channels: Designing and optimizing

Chen

Lü

2017

Sci. Sin.-Phys. Mech. Astron.

View full text Add to dashboard Cite

We show how a nonlocal N-qubit controlled unitary gate can be implemented locally and effectively by using non-symmetric quantum channels. We construct respectively two quantum networks for realizing conclusively this nonlocal quantum gate. The first one hires (N-2) symmetric qubit-qubit Bell states and a non-symmetric qubit-qudit Bell state as quantum channels. The basic idea of this scheme is to use (N-2) additional levels of this qudit to "hide" certain computational states of (N-1) nonlocal control states from the conditional dynamics, which results in an effective nonlocal N-qubit controlled unitary gate design. In this scheme, however, either the number of the additional levels or that of 1-qudit gates needs to increase with N. The other one can improve significantly the local implementation of this nonlocal gate if we harness (N-1) non-symmetric qubit-qutrit Bell states as quantum channels. This scheme uses respectively (N-1) qutrits's additional levels to expose one and only one initial computational state of (N-1) nonlocal control states to the conditional dynamics. In comparison with the first one, the procedure is greatly simplified, and the total gate time is reduced. The fact that the quantum network that does the proposed implementation is built entirely of local single-body and two-body gates, and has only (3N-4) two-body gates is notable.

show abstract

Detection-dependent six-photon Holland-Burnett state interference

Cited by 24 publications

References 45 publications

Reversed interplay of quantum interference and which-way information in multiphoton entangled states

Reversed interplay of quantum interference and which-way information in multiphoton entangled states

Superconducting coincidence photon detector with short timing jitter

Quantum networks for implementing effiently a nonlocal <italic>N</italic>-qubit controlled unitary gate via non-symmetric quantum channels: Designing and optimizing

Contact Info

Product

Resources

About

Detection-dependent six-photon Holland-Burnett state interference

Cited by 24 publications

References 45 publications

Reversed interplay of quantum interference and which-way information in multiphoton entangled states

Reversed interplay of quantum interference and which-way information in multiphoton entangled states

Superconducting coincidence photon detector with short timing jitter

Quantum networks for implementing effiently a nonlocal &lt;italic&gt;N&lt;/italic&gt;-qubit controlled unitary gate via non-symmetric quantum channels: Designing and optimizing

Contact Info

Product

Resources

About

Quantum networks for implementing effiently a nonlocal <italic>N</italic>-qubit controlled unitary gate via non-symmetric quantum channels: Designing and optimizing