Till decoherence do us part

Your rating: None
3
Average: 3 (1 vote)

QUANTUM SHORTS 2017: SHORTLISTED, OPEN CATEGORY

“Are you happy with the braid?” Alice looked up at her mother who had been feverishly fixing her hair. 
 
“That’s so much better than my attempt. Thank you Mum.” A smile spread across the older woman’s face, happy to find a way to contribute to her daughter’s special day. Now stood over Alice’s shoulder, her mother was visible in the mirror, the elegant and strong woman Alice aspired to be. However today something was missing from her usual strength. A hint of frown lines, the nervous quiver of her hands, Alice knew that her mother was nervous. Of course she was, her mother didn’t know what to expect this technology didn’t exist when she was younger. “Is the port accessible?” Alice asked, reaching near the braid to the back of her head. 
 
“Yes…I think so.” Her Mother’s hesitation was understandable, she wasn’t used to seeing the exposed fibre optic port on the back of Alice’s head. Her mother, like many of her generation, hadn’t felt the need to get a neural lace.
 
The port connected to a standard neural-electrical interface, combined with the latest quantum processor endowing the user audio-visual-perceptive connectivity to the web. Many of the older generation disliked the concept of permanent biological connection, some considered it intrusive, sticking with outdated smart glasses or other wearable AR devices. Alice couldn’t help but wonder how difficult her mother’s life must have been growing up without this connectivity.
 
The ceremony itself was a small affair, just Alice and Bob’s family and a few close friends. They had settled on a small chapel outside Alice’s hometown in Fife, and as they pulled up outside in the rental car she was struck again by its beauty. The crumbling exterior held together with veins of moss and the vows of a thousand couples who had pledged themselves to one another. Strange that such antiquity housed such cutting edge technology. Although not hugely religious herself, Alice respected the church’s progressiveness when it came to offering entanglement as a wedding option. The permanence of the process was perhaps appealing to those who considered marriage sacred. Regardless, it drew many people of Alice’s age back to an institution which had been largely abandoned by her mother’s generation.
 
“It’s time, Dear!” Alice exhaled deeply then nodded in response to her Mother as the chauffeur opened the door of the car.
 
Arm in arm, the two women passed through the arched doorway to the chapel. Although she knew that the audience’s attention would be on her, she wasn’t prepared for the entire congregation to synchronously turn to watch her walk down the aisle.
 
Keen to ignore those eager faces she stared ahead towards the altar, finally locking eyes with Bob. Like the silence after the crashing of a wave her self-consciousness began to dissipate. From that moment everything but her and her fiancé faded from focus. So much so that she almost didn’t feel her mother letting her arm go as she turned to face Bob.
To Alice the following minutes, the minister’s words, sped past in a blur. The heartfelt vows which Alice had prepared fell from her lips as if on autopilot.
 
“Alice?” Awoken from her daze she looked up at the minister who smiled reassuringly. “Do you take Bob to be your lawfully wedded husband?” Realizing that Alice had become distracted he joked “There are only two possibilities: yes or no,” drawing momentary laughter from the audience.
 
“I do!” blurted Alice, finally regaining focus.
 
“Excellent. Bob, do you take Alice to be your lawfully wedded wife?”
 
“I do.” Both of their faces stretched into broad smiles as the words floated to the rafters, joining those of the many couples coming before.
 
“Now, as chosen by Alice and Bob they will begin the process of entanglement,” continued the Minister. Reaching back to the altar he returned holding an ornate looking fibre optic cable. “Would the Best Man and Maid of Honour please step forward.” As rehearsed, their two closest friends each connected an end to the exposed fibre optic ports on the back of the newlyweds’ heads, hard wiring the two neural laces together. Unseen to the audience, the couple both enabled the entanglement protocol and initiated an encrypted connection. This protocol, a feature of modern neural laces, allowed two users to place their quantum processors into a state of quantum entanglement. Bordering on telepathy, the feature allowed a couple to share sensory input, awareness and even direct communication, regardless of their physical separation. Touted as the ultimate level of unity the process was also a test of a couples devotion to one another since unintended thoughts could occasionally pass through. Also expressing commitment the process was also irreversible due to the technology used to prevent decoherence of the entangled qubits.
 
As the loading bar in Alice’s field of vision finally reached ‘100%’ she was momentarily flooded with the new input from Bob’s neural lace. Alice could feel the presence of Bob in her mind and see what he was seeing – his parents in the audience smiling back at him. This momentary clarity gave way to a series of uncontrolled thoughts and memories passed into Alice’s mind. Images of Bob’s childhood, their first date, their first kiss, their trip to Thailand, all from Bob’s perspective. Overcome with the emotion of two people Alice began to shed tears of joy. Gaze now locked with Bob’s the emotion grew in intensity. Glimpses of Alice working at her desk, her hair glistening in sunlight, her lips glowing a rich shade of purple. 
 
No. That wasn’t a shade she recognised. Those couldn’t be her lips. Confused she refocussed on the face of her husband, now contorted. In fear? The flashes continued, a dress which Alice didn’t recognise, eyes a different shade to hers, a whispered word. Stricken by panic Alice took a step back almost tripping over her own dress.
 
“Bob.” Alice paused. “Who is Eve?”
About the Author: 
Peter Childs is a researcher married to physics, now having an affair with bioengineering.
Share this fiction

Quantum Theories: A to Z

A is for ...
Act of observation

Some people believe this changes everything in the quantum world, even bringing things into existence.

J is for ...
Josephson Junction

This is a narrow constriction in a ring of superconductor. Current can only move around the ring because of quantum laws; the apparatus provides a neat way to investigate the properties of quantum mechanics and is a technology to build qubits for quantum computers.

T is for ...
Tunnelling

This happens when quantum objects “borrow” energy in order to bypass an obstacle such as a gap in an electrical circuit. It is possible thanks to the uncertainty principle, and enables quantum particles to do things other particles can’t.

M is for ...
Multiverse

Our most successful theories of cosmology suggest that our universe is one of many universes that bubble off from one another. It’s not clear whether it will ever be possible to detect these other universes.

E is for ...
Ethics

As the world makes more advances in quantum science and technologies, it is time to think about how it will impact lives and how society should respond. This mini-documentary by the Quantum Daily is a good starting point to think about these ethical issues. 

https://www.youtube.com/watch?v=5qc7gpabEhQ&t=2s 

I is for ...
Interferometer

Some of the strangest characteristics of quantum theory can be demonstrated by firing a photon into an interferometer

T is for ...
Teleportation

Quantum tricks allow a particle to be transported from one location to another without passing through the intervening space – or that’s how it appears. The reality is that the process is more like faxing, where the information held by one particle is written onto a distant particle.

T is for ...
Time travel

Is time travel really possible? This article looks at what relativity and quantum mechanics has to say.

R is for ...
Reality

Since the predictions of quantum theory have been right in every experiment ever done, many researchers think it is the best guide we have to the nature of reality. Unfortunately, that still leaves room for plenty of ideas about what reality really is!

A is for ...
Atom

This is the basic building block of matter that creates the world of chemical elements – although it is made up of more fundamental particles.

E is for ...
Entanglement

When two quantum objects interact, the information they contain becomes shared. This can result in a kind of link between them, where an action performed on one will affect the outcome of an action performed on the other. This “entanglement” applies even if the two particles are half a universe apart.

N is for ...
Nonlocality

When two quantum particles are entangled, it can also be said they are “nonlocal”: their physical proximity does not affect the way their quantum states are linked.

M is for ...
Many Worlds Theory

Some researchers think the best way to explain the strange characteristics of the quantum world is to allow that each quantum event creates a new universe.

W is for ...
Wavefunction

The mathematics of quantum theory associates each quantum object with a wavefunction that appears in the Schrödinger equation and gives the probability of finding it in any given state.

O is for ...
Objective reality

Niels Bohr, one of the founding fathers of quantum physics, said there is no such thing as objective reality. All we can talk about, he said, is the results of measurements we make.

B is for ...
Bose-Einstein Condensate (BEC)

At extremely low temperatures, quantum rules mean that atoms can come together and behave as if they are one giant super-atom.

B is for ...
Bell's Theorem

In 1964, John Bell came up with a way of testing whether quantum theory was a true reflection of reality. In 1982, the results came in – and the world has never been the same since!

Y is for ...
Young's Double Slit Experiment

In 1801, Thomas Young proved light was a wave, and overthrew Newton’s idea that light was a “corpuscle”.

H is for ...
Hawking Radiation

In 1975, Stephen Hawking showed that the principles of quantum mechanics would mean that a black hole emits a slow stream of particles and would eventually evaporate.

P is for ...
Planck's Constant

This is one of the universal constants of nature, and relates the energy of a single quantum of radiation to its frequency. It is central to quantum theory and appears in many important formulae, including the Schrödinger Equation.

D is for ...
Decoherence

Unless it is carefully isolated, a quantum system will “leak” information into its surroundings. This can destroy delicate states such as superposition and entanglement.

K is for ...
Kaon

These are particles that carry a quantum property called strangeness. Some fundamental particles have the property known as charm!

F is for ...
Free Will

Ideas at the heart of quantum theory, to do with randomness and the character of the molecules that make up the physical matter of our brains, lead some researchers to suggest humans can’t have free will.

C is for ...
Cryptography

People have been hiding information in messages for millennia, but the quantum world provides a whole new way to do it.

U is for ...
Uncertainty Principle

One of the most famous ideas in science, this declares that it is impossible to know all the physical attributes of a quantum particle or system simultaneously.

M is for ...
Maths

Quantum physics is the study of nature at the very small. Mathematics is one language used to formalise or describe quantum phenomena.

Z is for ...
Zero-point energy

Even at absolute zero, the lowest temperature possible, nothing has zero energy. In these conditions, particles and fields are in their lowest energy state, with an energy proportional to Planck’s constant.

A is for ...
Alice and Bob

In quantum experiments, these are the names traditionally given to the people transmitting and receiving information. In quantum cryptography, an eavesdropper called Eve tries to intercept the information.

Q is for ...
Qubit

One quantum bit of information is known as a qubit (pronounced Q-bit). The ability of quantum particles to exist in many different states at once means a single quantum object can represent multiple qubits at once, opening up the possibility of extremely fast information processing.

K is for ...
Key

Quantum Key Distribution (QKD) is a way to create secure cryptographic keys, allowing for more secure communication.

S is for ...
Superposition

The feature of a quantum system whereby it exists in several separate quantum states at the same time.

U is for ...
Universe

To many researchers, the universe behaves like a gigantic quantum computer that is busy processing all the information it contains.

S is for ...
Schrödinger’s Cat

A hypothetical experiment in which a cat kept in a closed box can be alive and dead at the same time – as long as nobody lifts the lid to take a look.

L is for ...
Large Hadron Collider (LHC)

At CERN in Geneva, Switzerland, this machine is smashing apart particles in order to discover their constituent parts and the quantum laws that govern their behaviour.

C is for ...
Clocks

The most precise clocks we have are atomic clocks which are powered by quantum mechanics. Besides keeping time, they can also let your smartphone know where you are.

S is for ...
Schrödinger Equation

This is the central equation of quantum theory, and describes how any quantum system will behave, and how its observable qualities are likely to manifest in an experiment.

C is for ...
Computing

The rules of the quantum world mean that we can process information much faster than is possible using the computers we use now. This column from Quanta Magazine ​delves into the fundamental physics behind quantum computing.

V is for ...
Virtual particles

Quantum theory’s uncertainty principle says that since not even empty space can have zero energy, the universe is fizzing with particle-antiparticle pairs that pop in and out of existence. These “virtual” particles are the source of Hawking radiation.

G is for ...
Gravity

Our best theory of gravity no longer belongs to Isaac Newton. It’s Einstein’s General Theory of Relativity. There’s just one problem: it is incompatible with quantum theory. The effort to tie the two together provides the greatest challenge to physics in the 21st century.

Q is for ...
Quantum biology

A new and growing field that explores whether many biological processes depend on uniquely quantum processes to work. Under particular scrutiny at the moment are photosynthesis, smell and the navigation of migratory birds.

R is for ...
Randomness

Unpredictability lies at the heart of quantum mechanics. It bothered Einstein, but it also bothers the Dalai Lama.

Q is for ...
Quantum States

Quantum states, which represent the state of affairs of a quantum system, change by a different set of rules than classical states.

H is for ...
Hidden Variables

One school of thought says that the strangeness of quantum theory can be put down to a lack of information; if we could find the “hidden variables” the mysteries would all go away.

L is for ...
Light

We used to believe light was a wave, then we discovered it had the properties of a particle that we call a photon. Now we know it, like all elementary quantum objects, is both a wave and a particle!

G is for ...
Gluon

These elementary particles hold together the quarks that lie at the heart of matter.

X is for ...
X-ray

In 1923 Arthur Compton shone X-rays onto a block of graphite and found that they bounced off with their energy reduced exactly as would be expected if they were composed of particles colliding with electrons in the graphite. This was the first indication of radiation’s particle-like nature.

S is for ...
Sensors

Researchers are harnessing the intricacies of quantum mechanics to develop powerful quantum sensors. These sensors could open up a wide range of applications.

P is for ...
Probability

Quantum mechanics is a probabilistic theory: it does not give definite answers, but only the probability that an experiment will come up with a particular answer. This was the source of Einstein’s objection that God “does not play dice” with the universe.

T is for ...
Time

The arrow of time is “irreversible”—time goes forward. On microscopic quantum scales, this seems less certain. A recent experiment shows that the forward pointing of the arrow of time remains a fundamental rule for quantum measurements.

W is for ...
Wave-particle duality

It is possible to describe an atom, an electron, or a photon as either a wave or a particle. In reality, they are both: a wave and a particle.

I is for ...
Information

Many researchers working in quantum theory believe that information is the most fundamental building block of reality.

D is for ...
Dice

Albert Einstein decided quantum theory couldn’t be right because its reliance on probability means everything is a result of chance. “God doesn’t play dice with the world,” he said.

Copyright © 2024 Centre for Quantum Technologies. All rights reserved.