155 citations · 903 across the 30 of their papers we have counts for
36 papers
Fermions and the Tsirelson Problem in Real Quantum Theory
Timothee Hoffreumon, Mischa P. Woods
In a previous work, we showed that real quantum theory (RQT) cannot be experimentally distinguished from ordinary quantum theory (QT). In this paper, we investigate whether this in…
Clarifications on the Experimental Status of Real Quantum Theory
Timothée Hoffreumon, Mischa P. Woods
In our previous paper on the matter, we proved that real quantum theory (RQT) cannot be experimentally falsified without the experiment falsifying quantum theory (QT) as well. Our…
Measuring Clock Precision Without an Ideal Time Reference
Pablo Á. Domínguez, Christopher Chubb, Mischa P. Woods
Characterising physical devices typically requires comparison with more precise reference standards. For clocks, however, this approach is problematic because no physically perfect…
Characterising the precision of a clock without any external time reference
Pablo Á. Domínguez, Christopher Chubb, Mischa P. Woods
Determining a clock's precision usually requires comparison with a better time reference, yet no ideal reference is physically attainable. We show how a single clock can characteri…
A Square-Root Barrier to Quantum Gate Speed under Linear Coupling
Pablo Restrepo Gaviria, Mischa P. Woods
Faster quantum gates can suppress the decoherence accumulated during a computation, but in superconducting processors stronger microwave pulses can also increase leakage, off-reson…
Quantum theory based on real numbers cannot be experimentally falsified
Timothée Hoffreumon, Mischa P. Woods
Whether the complex numbers of standard quantum theory are experimentally indispensable has remained open for decades. Real quantum theory (RQT), obtained by replacing complex ampl…
Quantum theory does not need complex numbers
Timothee Hoffreumon, Mischa P. Woods
Quantum theory was radically different from the theories of nature which came before it. One key difference was its use of complex numbers. This opened a longstanding debate over w…
Quantum Frequential Computing: a quadratic runtime advantage for all computations
Mischa P. Woods
An enduring challenge in computer science is reducing the runtime required to solve computational problems. Quantum computing has attracted significant attention due to its potenti…
On the feasibility of detecting quantum delocalization effects on relativistic time dilation in optical clocks
Yanglin Hu, Maximilian P. E. Lock, Mischa P. Woods
We derive the predicted time dilation of delocalized atomic clocks in an optical lattice setup in the presence of a gravitational field to leading order in quantum relativistic cor…
Quantum advantages in timekeeping: dimensional advantage, entropic advantage and how to realise them via Berry phases and ultra-regular spontaneous emission
Arman Pour Tak Dost, Mischa P. Woods
When an atom is in an excited state, after some amount of time, it will decay to a lower energy state emitting a photon in the process. This is known as spontaneous emission. It is…
On the system loophole of generalized noncontextuality
Victor Gitton, Mischa P. Woods
Generalized noncontextuality is a well-studied notion of classicality that is applicable to a single system, as opposed to Bell locality. It relies on representing operationally in…
A general quantum circuit framework for Extended Wigner's Friend Scenarios: logically and causally consistent reasoning without absolute measurement events
V. Vilasini, Mischa P. Woods
Extended Wigner's Friend Scenarios (EWFSs) go beyond the standard usage of quantum theory, where agents are treated classically, and instead model agents as unitary evolving quantu…
Time-energy uncertainty relation for noisy quantum metrology
Philippe Faist, Mischa P. Woods, Victor V. Albert +3
Detection of weak forces and precise measurement of time are two of the many applications of quantum metrology to science and technology. We consider a quantum system initialized i…
Measuring time with stationary quantum clocks
Sergii Strelchuk, Mischa P. Woods
Time plays a fundamental role in our ability to make sense of the physical laws in the world around us. The nature of time has puzzled people -- from the ancient Greeks to the pres…
Optimal Universal Quantum Error Correction via Bounded Reference Frames
Yuxiang Yang, Yin Mo, Joseph M. Renes +2
Error correcting codes with a universal set of transversal gates are a desideratum for quantum computing. Such codes, however, are ruled out by the Eastin-Knill theorem. Moreover,…
Autonomous Ticking Clocks from Axiomatic Principles
Mischa P. Woods
There are many different types of time keeping devices. We use the phrase ticking clock to describe those which -- simply put -- "tick" at approximately regular intervals. Various…
Ticking-clock performance enhanced by nonclassical temporal correlations
Costantino Budroni, Giuseppe Vitagliano, Mischa P. Woods
We investigate the role of nonclassical temporal correlations in enhancing the performance of ticking clocks in a discrete-time scenario. We show that the problem of optimal models…
Solvable Criterion for the Contextuality of any Prepare-and-Measure Scenario
Victor Gitton, Mischa P. Woods
Starting from arbitrary sets of quantum states and measurements, referred to as the prepare-and-measure scenario, an operationally noncontextual ontological model of the quantum st…
Autonomous Quantum Devices: When Are They Realizable without Additional Thermodynamic Costs?
Mischa P. Woods, Michał Horodecki
The resource theory of quantum thermodynamics has been a very successful theory and has generated much follow-up work in the community. It requires energy-preserving unitary operat…
Approximate quantum non-demolition measurements
Sami Boulebnane, Mischa P. Woods, Joseph M. Renes
With the advent of gravitational wave detectors employing squeezed light, quantum waveform estimation---estimating a time-dependent signal by means of a quantum-mechanical probe---…
Universal quantum modifications to general relativistic time dilation in delocalised clocks
Shishir Khandelwal, Maximilian P. E. Lock, Mischa P. Woods
The theory of relativity associates a proper time with each moving object via its world line. In quantum theory however, such well-defined trajectories are forbidden. After introdu…
Continuous groups of transversal gates for quantum error correcting codes from finite clock reference frames
Mischa P. Woods, Álvaro M. Alhambra
Following the introduction of the task of reference frame error correction, we show how, by using reference frame alignment with clocks, one can add a continuous Abelian group of t…
Quantum clocks are more precise than classical ones
Mischa P. Woods, Ralph Silva, Gilles Pütz +2
A clock is, from an information-theoretic perspective, a system that emits information about time. One may therefore ask whether the theory of information imposes any constraints o…
Resource theory of quantum thermodynamics: Thermal operations and Second Laws
Nelly Ng, Mischa P. Woods
Resource theories are a generic approach used to manage any valuable resource, such as entanglement, purity, and asymmetry. Such frameworks are characterized by two main elements:…