"Money has been reduced to a simulacrum of its former self, a mere obligation by a counterparty to perform bookkeeping functions," writes Stefano Gogioso in A Quantum Moneyfesto.
In the science fiction universe of Star Trek, traveling from the bridge of the Starship Enterprise down to the surface of a nearby planet takes mere seconds. Crewmembers step into the Transporter, a device that dematerializes their physical bodies into a precise quantum-level energy pattern and beams it to a target destination, where the energy is instantly converted back into matter for reassembly.
For decades, the official in-universe explanation has maintained that the person who beams back up is identically the same person who beamed down. The consciousness of transported crewmembers supposedly remains unbroken and continuous, preserved by the absolute perfection of the Transporter’s quantum-level scan and reconstruction process. As primary evidence, the show points to crewmembers who consistently report retaining clear memories of being in active transit.
However, modern real-world science has since unveiled how quantum-level transportation actually functions, and the reality is vastly different from television fiction.
In actual quantum teleportation, which was first successfully discovered in 1993, the only element being teleported across space is pure information. Teleporting something as delicate as a qubit requires that the original quantum state of that specific qubit be entirely destroyed. Under the fundamental laws of physics, attempting to collect precise information about an unknown quantum state instantly collapses its fragile superposition, thereby destroying the original state completely.
Nevertheless, the collected information can subsequently be transmitted as classical data—simple sequences of ones and zeros—over standard telecommunication infrastructure like a satellite or fiber optic cable. Then, through the peculiar physics-magic of quantum entanglement, that information can be used to reassemble an identical state using entirely different particles at the designated destination.
This leads to a deeply unsettling truth regarding science fiction: the Transporter on the Starship Enterprise could only ever function by systematically killing its passengers. The crewmember who beams down into an away team is fundamentally not the exact same individual who beams back up to the ship.
This profound realization carries fascinating implications for the future of money, banking, and global finance.
In traditional banking, the mechanics of sending money from Bank A to Bank B rely entirely on messaging. Bank A decreases a numerical entry in its internal spreadsheet and simultaneously dispatches a formal message instructing Bank B to increase that exact same number in its own records.
Crucially, only the message moves across the network, never the actual money. This fundamental limitation is precisely why human society requires banks in the first place: to act trusted intermediaries that send and manage messages about our respective balances.
With the emergence of theoretical quantum money, however, the paradigm shifts entirely. In this system, the money itself sends its own messages.
Quantum money operates on the premise that economic value could be directly represented by the quantum state of a physical particle and securely exchanged through the mechanics of quantum teleportation.
"The most important thing to understand here is that quantum [money] behaves like a resource, not like data," explains researcher Fabrizio Genovese via email.
Where a traditional bank deposit represents abstract information about money, and a cryptocurrency like Bitcoin represents a decentralized consensus record representing money, quantum money would literally be the money itself. It would consist of an uncopyable atom, photon, or molecule that physically is the currency. It is not data about money, but the physical resource of money incarnate.
This innovative approach holds immense utility because it would allow monetary value to be secured and transported strictly according to the unbreakable physical laws of superposition, entanglement, and the no-cloning theorem. In simpler terms, the laws of physics might one day accomplish what complex databases and distributed ledgers achieve today, but they would do so entirely without the need for a database or a blockchain ledger.
Consequently, quantum money would inherently possess the self-custodial properties of physical cash. Individuals would be able to store qubits of money locally inside a secure hardware device, exactly the way one might keep physical paper bills tucked safely inside a pocket.
This capability would render monetary exchanges entirely permissionless, eliminating the need for any third-party intermediaries, while also ensuring absolute privacy because no centralized ledger of transactions would exist.
At the same time, quantum money would retain the swift transportability properties of digital money. The act of destroying the quantum money on a local device creates the exact sendable information required to recreate it on another device located anywhere else in the world.
During this brief window, when the quantum state is in transit as classical data, it momentarily ceases to exist altogether—a detail that further confirms the harrowing reality that the Star Trek Transporter truly functions as a high-tech suicide machine.
Sending quantum money will ultimately feel much like sending physical cash securely through the postal mail. Yet, it will be vastly superior, because the transfer will arrive instantaneously across any distance.
The historical necessity of sending money over great distances gave rise to the banking system. However, while solving that logistical hurdle, it introduced the powerful intermediaries that currently control virtually all global monetary flows.
Bitcoin, of course, was invented to make peer-to-peer transactions feasible across vast geographic distances without traditional banks. Yet, quantum money would represent an entirely unstoppable way to achieve the same goal.
"Blockchain transactions are not quite peer-to-peer," notes Stefano Gogioso in a recent discussion, "because there’s always going to be part of the mechanism that can stop your transaction from going through. For economical, political, or technological reasons."
By contrast, nothing in the universe will be able to stop a quantum transaction, regardless of the circumstances or motivations involved.
Despite its revolutionary potential, the technology faces a major physical limitation. Unlike Star Trek, where Captain Kirk could beam down to any newly discovered planet on a whim, quantum money can only be transported directly to a specialized hardware device that has been properly prepared to receive it.
Because those specialized receiving devices do not yet exist, practical quantum money remains unfeasible for now. Gogioso estimates that society is still roughly three or four years away from seeing the earliest functional iterations of the technology.
When those systems eventually arrive, they will likely represent the safest conceivable method for transferring value across space.
Extracting security directly from quantum states, Genovese observes, is conceptually comparable to harvesting clean energy from the Sun: "It’s what the universe gave us."
As a result, he anticipates that all advanced cybersecurity will eventually migrate toward quantum states, and monetary systems will inevitably follow that same trajectory.
Humanity will still face the fundamental challenge of assigning value to those quantum states, however, and that sociological hurdle may ultimately prove to be the most difficult trick of all. Building a functional device to teleport qubits is one challenge, but convincing a broader population to accept them as legitimate payment is an entirely different endeavor.
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