Broadband noise decoherence in solid-state complex architectures

Broadband noise represents a severe limitation towards the implementation of a solid-state quantum information processor. Considering common spectral forms, we propose a classification of noise sources based on the effects produced instead of on their microscopic origin. We illustrate a multi-stage approach to broadband noise which systematically includes only the relevant information on the environment, out of the huge parametrization needed for a microscopic description. We apply this technique to a solid-state two-qubit gate in a fixed coupling implementation scheme.Comment: Proceedings of Nobel Symposium 141: Qubits for Future Quantum Informatio

Inside-out and outside-in orientations: A meta-analysis of orientation's effects on innovation and firm performance

The inside-out and outside-in orientations place differing levels of emphasis on internal versus external resources and capabilities as sources of competitive advantage. While the inside-out orientation primarily considers organizational resources, followed by competitors and customers (implicitly), the outside-in orientation appears to reverse the order by first examining customers and competitors and then the degree to which the firm responds to them, implicitly addressing organizational resources. Existing empirical evidence does not clarify the comparative effects of inside-out and out-side in orientations on innovation performance. This paper draws on 232 independent studies (N = 38,051) analyzed systematically through a quantitative meta-analytic synthesis in order to develop a detailed contextualized elaboration of the relationships between the inside-out and outside-in orientations and innovation performance. Going beyond the direct effects, we also extend the literature by investigating the moderating effects of industry type (high-tech vs. low-tech), economic development (developed vs. developing countries), and cultural context (collectivist vs. individualist cultures). Our findings shed light on the relative value of inside-out and outside-in orientation for innovation performance, the direct and indirect effects of the two orientations on firm performance, and the conditions under which the effectiveness of each is enhanced

Gay- and Lesbian-Sounding Auditory Cues Elicit Stereotyping and Discrimination

open4openFasoli, Fabio; Maass, Anne; Paladino, Maria Paola; Sulpizio, SimoneFasoli, Fabio; Maass, Anne; Paladino, Maria Paola; Sulpizio, Simon

Gay- and Lesbian-Sounding Auditory Cues Elicit Stereotyping and Discrimination

Thegrowing bodyof literatureonthe recognition of sexual orientation from voice (‘‘auditory gaydar’’) is silent on the cognitive and social consequences of having a gay-/lesbianversus heterosexual-sounding voice.We investigated this issue in four studies (overall N=276), conducted in Italian language, in which heterosexual listeners were exposed to single-sentence voice samples of gay/lesbian and heterosexual speakers. In all four studies, listeners were found to make gender-typical inferences about traits and preferences of heterosexual speakers, but gender-atypical inferences about those of gay or lesbian speakers. Behavioral intentionmeasures showed that listeners considered lesbian and gay speakers as less suitable for a leadership position, andmale (but not female) listeners took distance from gay speakers. Together, this research demonstrates that having a gay/ lesbian rather than heterosexual-sounding voice has tangible consequences for stereotyping and discrimination

Effects of low-frequency noise cross-correlations in coupled superconducting qubits

We study the effects of correlated low frequency noise sources acting on a two qubit gate in a fixed coupling scheme. A phenomenological model for the spatial and cross-talk correlations is introduced. The decoherence inside the SWAP subspace is analysed by combining analytic results based on the adiabatic approximation and numerical simulations. Results critically depend on amplitude of the low frequency noise with respect to the qubits coupling strength. Correlations between noise sources induce qualitative different behaviors depending on the values of the above parameters. The possibility to reduce dephasing due to correlated low frequency noise by a recalibration protocol is discussed.Comment: 18 pages, 7 figure

Identity Shifts Among Cis- and Trans- Females Who Sell Sex on the Streets of New York City

The Deviant Identity Shift (DIS) Model that is introduced in this dissertation provides a framework for making sense of how sex workers come to understand their own place in the world, including the experiences of violence that often accompany their lives, and it shifts our attention away from static models that focus on unidimensional or even multidimensional factors that impact the lives of sex workers, to a far more dynamic view of the evolution of their distinctive forms of cultural identity. A series of themes emerge from the life histories of 18 cis- and 15- trans women between the ages 18 and 30, who solicited clients on the streets of New York. The narratives presented here that are emblematic of the involvement that the women experienced during various stages of their sex work careers embodies and reflects the identity shifts that they experienced within and across the illicit sex markets, and together, fit into a model that tracks the evolution of their cultural identity. This study used an ethnographic grounded theory approach to analyze and collect data. The nine themes were classified into four groups reflecting the cis- and trans- women’s involvement over time: 1) rationale for selling sex, 2) facilitated involvement, 3) changes in client recruitment and solicitation methods, and 4) diminished involvement. The model addresses gaps in our understanding of the lives of those who participate in illicit sex markets, and it relies upon detailed life histories that provide rich narratives that describe the social and psychological contexts which allow us to make better sense of their lives

Superconducting qubit manipulated by fast pulses: experimental observation of distinct decoherence regimes

A particular superconducting quantum interference device (SQUID)qubit, indicated as double SQUID qubit, can be manipulated by rapidly modifying its potential with the application of fast flux pulses. In this system we observe coherent oscillations exhibiting non-exponential decay, indicating a non trivial decoherence mechanism. Moreover, by tuning the qubit in different conditions (different oscillation frequencies) by changing the pulse height, we observe a crossover between two distinct decoherence regimes and the existence of an "optimal" point where the qubit is only weakly sensitive to intrinsic noise. We find that this behaviour is in agreement with a model considering the decoherence caused essentially by low frequency noise contributions, and discuss the experimental results and possible issues.Comment: 16 pages, 9 figure

MicroRNA Roles in Cell Reprogramming Mechanisms

Cell reprogramming is a groundbreaking technology that, in few decades, generated a new paradigm in biomedical science. To date we can use cell reprogramming to potentially generate every cell type by converting somatic cells and suitably modulating the expression of key transcription factors. This approach can be used to convert skin fibroblasts into pluripotent stem cells as well as into a variety of differentiated and medically relevant cell types, including cardiomyocytes and neural cells. The molecular mechanisms underlying such striking cell phenotypes are still largely unknown, but in the last decade it has been proven that cell reprogramming approaches are significantly influenced by non-coding RNAs. Specifically, this review will focus on the role of microRNAs in the reprogramming processes that lead to the generation of pluripotent stem cells, neurons, and cardiomyocytes. As highlighted here, non-coding RNA-forced expression can be sufficient to support some cell reprogramming processes, and, therefore, we will also discuss how these molecular determinants could be used in the future for biomedical purposes