When used in quantum state estimation, projections onto mutually unbiased bases have the ability to maximize information extraction per measurement and minimize redundancy. We present first experimental demonstration of tomography two-qubit polarization states take advantage bases. demonstrate improved estimation as compared standard strategies discuss how this can be understood from structure measurements we use. experimentally our method for three different observe that infidelity was up...

We present the design, implementation and validation of a swept-source optical coherence tomography (OCT) system for real-time imaging human middle ear in live patients. Our consists highly phase-stable Vernier-tuned distributed Bragg-reflector laser along with processing engine implemented on graphics unit. use to demonstrate, first time subjects, Doppler measurements vibration response sound, video rate 2D B-mode 3D volumetric imaging. All were performed non-invasively through intact...

Middle ear optical coherence tomography (OCT) imaging in patients has not previously been directly compared with a standard of care clinical 3-dimensional technology, such as computed (CT). To qualitatively compare the capabilities middle OCT CT normal and pathological ears on representative slices coregistered datasets. This case series included 3 ears: 1 ear, affected by traumatic injury, cholesteatoma. The were imaged both high-resolution temporal bone CT. Participants drawn from patient...

We address the problem of completely characterizing multiparticle states including loss information to unobserved degrees freedom. In systems where nonclassical interference plays a role, such as linear-optics quantum gates, can degrade in two ways, by decoherence and distinguishing particles. Distinguishing information, often limiting factor for optical devices, is not correctly described previous state-reconstruction techniques, which account only decoherence. extend these techniques find...

Research in nonorthogonal-state discrimination has given rise to two conventional optimal strategies: unambiguous (UD) and minimum error discrimination. We explore the experimentally relevant range of measurement strategies between two, where rate inconclusive results is minimized for a bounded-error rate. first provide some constraints on problem that apply generalized measurements [positive-operator-valued (POVMs)]. then theory projective this range. Through analytical numerical we...

The results of a study the three-dimensional vibration two dry human skulls in response to harmonic excitation are presented. vibratory exhibits three distinct types motion across range audible frequencies. At low frequencies below 1000 Hz, whole-head quasi-rigid is seen. middle between and 6000 series increasingly complex modal patterns. Above wavelike clear wavefronts can be distinguished data. In this regime relationship wavelength frequency calculated compared number theories skull that...

Noninvasive middle ear imaging using optical coherence tomography (OCT) presents some unique challenges for real-time, clinical use in humans. We present results from a two-dimensional/three-dimensional OCT system built to assess the requirements of imaging, and technical associated with them. These include need work at low numerical aperture, deleterious effects transtympanic on image quality ossicles, sensitivity fidelity images real-time rates, high dynamic-range ear. validated by...

In this study, we demonstrate a sparsity-regularized, complex, blind deconvolution method for removing sidelobe artefacts and stochastic noise from optical coherence tomography (OCT) images. Our estimates the complex scattering amplitude of tissue on line-by-line basis by estimating deconvolving one-dimensional axial point spread function (PSF) measured OCT A-line data. We also present strategy employing sparsity weighting mask to mitigate loss speckle brightness within tissue-containing...

Ultrasonic power transfer using piezoelectric devices is a promising wireless technology for biomedical implants. However, sub-dermal implants where the separation between transmitter and receiver on order of several acoustic wavelengths, ultrasonic efficiency (PTE) highly sensitive to distance receiver. This sensitivity can cause large swings in presents serious limitation battery life overall performance. A practical transcutaneous energy (UTET) system design must accommodate different...

Hypothesis: Ears with otosclerotic stapes fixation will exhibit lower-than-normal levels of ossicular mobility as measured by Optical Coherence Tomography Doppler Vibrometry (OCT-DV). Background: OCT-DV measures the vibration middle ear structures in response to sound non-invasively through intact tympanic membrane. This allows, particular, direct measurement at lenticular process incus which is expected be lower patients fixation. Methods: was performed on ears presumptively diagnosed...

We have applied the concept of truncated exponential timers for efficient reliable multicast feedback suppression cases both and unicast channels. Unicast operation transport is becoming a more prevalent concern with advent source specific routing asymmetric networks offering forward-based (e.g., satellite distribution network). discuss our approach to design its integration working protocol. then present simulation results demonstrating that observed implementation performance matches...

We present a method for describing and characterizing the state of $N$ particles that may be distinguishable in principle but not practice due to experimental limitations. The technique relies upon careful treatment exchange symmetry among experimentally accessible inaccessible degrees freedom. approach we allows formalization notion indistinguishability can implemented easily using currently available techniques. Our work is direct relevance current experiments quantum optics, which provide...

We introduce a novel system for geometrically accurate, continuous, live, volumetric middle ear optical coherence tomography imaging over 10.9mm×30∘×30∘ field of view (FOV) from handheld probe. The employs discretized spiral scanning (DC-SC) pattern to rapidly collect data and applies real-time scan conversion lateral angular distortion correction reduce geometric inaccuracies below the system's resolution 92% FOV. validate accuracy resulting images through comparison with co-registered...

A prototype of a novel bone-conduction hearing actuator based on piezoelectric bending is presented. The device lies flat against the skull which would allow it to form basis subcutaneous bone-anchored aid. excites in bone through local moment rather than application point force as with conventional aids. Through measurements cochlear velocity created by embalmed human heads, shown exhibit high efficiency, making possible alternative present-day electromagnetic bone-vibration actuators.

Round window reinforcement leads to conductive hearing loss.The round is stiffened surgically as therapy for various conditions, including perilymphatic fistula and superior semicircular canal dehiscence. reduces symptoms in these patients. However, it also fluid displacement the cochlea might therefore increase loss.Perichondrium was applied membrane nine fresh-frozen, nonpathologic temporal bones. In four bones cartilage subsequently. Acoustic stimuli form of frequency sweeps from 250 8000...

We describe ongoing work in adding congestion control extensions to an existing negative acknowledgement (NACK) oriented reliable multicast protocol. Our previous adopted and used the concept of a dynamic worst path representative (WPR) receiver for equation-based rate adaptation at source. have further refined this approach. present design overview simulation results these within working protocol (MDP-CC, dissemination control). analysis interflow fairness with steady state TCP unicast...

Purpose To evaluate a CT structural analysis protocol (SAP) for estimating the strength of human female cadaveric spines with lytic lesions. Materials and Methods Osteolytic foci was created in middle vertebra 44 thoracic lumbar three-level segments from 11 cadavers (age range, 50-70 years). The underwent by using standard clinical their failure assessed at SAP. were mechanically tested to pure axial compression or torsion. relationships defect size, bone mineral density, predicted load (at...