Integrated polarization-independent optical isolators and circulators on an InP membrane on silicon platform

Ma, Rui; Reniers, Sander; Shoji, Yuya; Mizumoto, Tetsuya; Williams, Kevin; Jiao, Yuqing; Tol, J.J.G.M. van der

doi:10.1364/optica.443097

Cited by 15 publications

(9 citation statements)

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“…1(a)). Such an arrangement can be easily realized in practice, for example, by laser-writing a systems of single-mode waveguides in a balk glass [24,25,[32][33][34], or growing planar semiconductor structures on some platform, for example, InGaAsP material on InP [6,35] (see the Appendix for discussion of several designs of dissipative waveguide couplers on the integrated photonic platform). To demonstrate a breaking of reciprocity, let us consider a bipartite two-waveguides system as schematically shown in Fig.…”

Section: Breaking Reciprocity By Linear Dissipative Couplingmentioning

confidence: 99%

“…For such an input, the action of the second part of the device just exponentially reduces the state to the vacuum. Such behavior can be easily understood from the character of dynamics dictated by the master equation (6). The dissipative coupling between modes in j-th part of the system drives their state to the one satisfying L j ρ = 0 [24,34].…”

Section: Breaking Reciprocity By Linear Dissipative Couplingmentioning

confidence: 99%

“…INTRODUCTIONRecently, non-reciprocal propagation of electromagnetic field became a popular research theme. Non-reciprocity is important for quite a wide of practical tasks, from field distributors and circulators to lasing and high-precision sensing [1][2][3][4][5][6]. Current interest to realization of non-reciprocal systems, and especially isolators, is born of necessity to extent methods commonly applied for longer wavelength (radio, microwaves, etc.)…”

mentioning

confidence: 99%

“…FIG.2. Dynamics of the population for the single-mode bipartite system with parts described by the Lindblad operators(13) with m1 = 4 and m2 = 2 as given by the master equation(6) for the initial coherent state with 5 photons and the same rate γ. Solid lines both in the main panel and in the upper inset correspond to the propagation 1 → 2; dashed lines both in the main panel and the inset correspond to the propagation 2 → 1.…”

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Breaking reciprocity by designed loss

Peshko,

Pustakhod,

Mogilevtsev

2022

Preprint

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In this paper we show how designed loss in open quantum systems can break reciprocity of the state propagation, and how the non-reciprocal and even unidirectional propagation can be achieved for different kinds of designed loss, both linear and nonlinear ones. In particular, we show how a unidirectional propagation can be achieved for states of certain symmetry in linear schemes, demonstrate possibility of building a single-mode optical insulator by combining two kinds of nonlinear designed losses, and the way to build non-reciprocal circulator with a planar structure of dissipatively coupled waveguides. We discuss feasibility of the considered schemes and suggest possible realizations. I. INTRODUCTIONRecently, non-reciprocal propagation of electromagnetic field became a popular research theme. Non-reciprocity is important for quite a wide of practical tasks, from field distributors and circulators to lasing and high-precision sensing [1][2][3][4][5][6]. Current interest to realization of non-reciprocal systems, and especially isolators, is born of necessity to extent methods commonly applied for longer wavelength (radio, microwaves, etc.) toward optical region and possibility to integrate non-reciprocal systems into photonic circuitry. Traditional realizations implementing magneto-sensitive media are either hard to realize on the basis of existing integration platforms, or difficult even to realize for optical wavelength, or both [4,5]. So, a plethora of novel schemes for breaking reciprocity has appeared in recent years. There are schemes exploiting time-modulation [7,8], nonlinearities [9][10][11] and interaction with few-level systems, such as atom-like structures [4,[12][13][14], optomechanics [15], topological properties of structured media [5,16,17].Some quite interesting results were also obtained by considering loss. Recently it was shown that even common single-photon energy losses in conjunction with the usual (i.e., unitary) coupling can also be a tool for devising non-reciprocal multi-mode structures [18,19]. Even more interesting results are obtained with designed loss, i.e., for example, when different systems are coupled to the same loss reservoir inducing dissipative coupling between them, or when loss is made to be nonlinear. For instance, designed collective linear loss can lead to unidirectional propagation and amplification [20,21].Here we present another interesting feature of designed loss: it is ability to break reciprocity without conjoining with the simultaneous unitary coupling. We discuss a general recipe for doing so with the designed loss allowing for several stationary states, provide several examples and outline ways for possible practical realizations, in particular, with integrable planar waveguide systems. Notice that schemes relying only on the designed loss might be easier to realize in practice that schemes combining unitary and dissipative coupling, since one does not need adjusting different types of coupling. We show how the designed nonlinear loss can break reciprocity ev...

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Section: Breaking Reciprocity By Linear Dissipative Couplingmentioning

confidence: 99%

Section: Breaking Reciprocity By Linear Dissipative Couplingmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Breaking reciprocity by designed loss

Peshko,

Pustakhod,

Mogilevtsev

2022

Preprint

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show abstract

“…Recently, non-reciprocal propagation of the electromagnetic field became a popular research theme. Non-reciprocity is important for quite a wide range of practical tasks, from field distributors and circulators to lasing and high-precision sensing [1][2][3][4][5][6]. Current interest for realization of non-reciprocal systems, and especially isolators, is born of the necessity to extend methods commonly applied for longer wavelengths (radio, microwaves, etc.)…”

Section: Introductionmentioning

confidence: 99%

Breaking reciprocity by designed loss

2022

View full text Add to dashboard Cite

In this paper, we show how designed loss in open quantum systems can break the reciprocity of field propagation, and how non-reciprocal and even unidirectional propagation can be achieved for different kinds of designed loss, both linear and nonlinear. In particular, we show how unidirectional propagation can be achieved for input states of certain symmetry in linear schemes, and demonstrate the possibility of building a single-mode optical insulator by combining two kinds of nonlinear designed losses, and the way to build a non-reciprocal asymmetric field distributor with a planar structure of dissipatively coupled waveguides. We discuss the feasibility of the considered schemes and suggest possible realizations.

show abstract